| Title | Edition | Year of Publication | Contributors | Country of Publication | Possible Copyright Status | Available Online? |
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| Religious chastity; an ethnological study | | 1913 | Elsie Worthington Clews Parsons |  |  | | | |    
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| Reproduction | | 1916 | Thomas Walton Galloway | | | | | |
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| Reproduction and sex hygiene: a text and a method | | 1916 | Walter Hollis Eddy | | | |  | |
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| ... Reproduction, genetics and the development of sex | | 1932 | Julian Huxley, H. G. (Herbert George) Wells, G. P. (George Philip) Wells | | | | | |
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| A research in marriage | | 1929 | G. V. Hamilton | | | |  | |
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| Revelation of sex mysteries | | 1924 | Roderick Thurber | | | | | |
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| The revolt of modern youth | | 1925 | Wainwright Evans, Ben B. (Ben Barr) Lindsey | | | | | |
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| Rhythm of life: a guide to sexual harmony for women | | 1934 | Sofie Lazarsfeld, E. Pelham Stapelfeldt, R. (Robert) Lazarsfeld | | | | | |
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| The rhythm of sterility and fertility in women: a discussion of the physiological, practical, and ethical aspects of the discoveries of Drs | | 1934 | Leo John Latz | | | | | |
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| The riddle of sex: the medical and social aspects of sex, love and marriage | | 1929 | Joseph Tenenbaum | | | | | |
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| The right to be happy | | 1927 | Countess Dora Winifred Black Russell Russell | | | | | |
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| The right to be happy | | 1927 | Countess Dora Winifred Black Russell Russell, Mrs. Bertrand Russell | | | | | |
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| The royal road to hell | 4th ed. | 1911 | Melville Cox Keith | | | | | |
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| The sacred fire: the story of sex in religion | | 1930 | B. Z. (Ben Zion) Goldberg | | | | | |
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| Sacrifice to Attis: a study of sex and civilisation | | 1936 | William A. (William Alfred) Brend | | | | | |
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| Sadism and masochism: the psychology of hatred and cruelty | | 1929 | Wilhelm Stekel, William Stekel | | | | | |
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| Sadismus und Masochismus: für Arzte und Kriminalogen dargestellt | | 1925 | Wilhelm Stekel | | | | | |
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| Safe counsel | | 1922 | Dr. Emma P. A. Drake, J. W. Collins, Edward Spear | | | | | |
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| Safe counsel: or, Practical eugenics | | 1925 | Emma F. Angell (Emma Frances Angell) Drake, James Lawrence Nichols, Dr. Emma F. A. Drake | | | | | |
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| Safeguards of chastity | | 1929 | Rev. Fulgence Meyer, father Fulgence Meyer | | | | | |
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| Sane sex life and sane sex living: some things that all people ought to know about sex nature and sex functioning | | 1922 | Harland William Long | | | | | |
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| Sane sex life and sane sex living: some things that all sane people ought to know about sex nature and sex functioning | | 1919 | Harland William Long | | | | | |
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| Sanity in sex | | 1920 | William J. (William John) Fielding | | | | | |
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| The scented garden: anthropology of the sex life in the Levant | | 1933 | Bernhard Stern | | | | | |
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| The science of a new life | | 1925 | John. Cowan, Arthur Rose Guerard | | | | | |
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| The Science of living: a series of heart to heart talks to married and marriageable men and women on subjects vital to health and happiness | | 1927 | W. H., Charles William Eliot, Mrs. Louise Francis Spaller | | | | | |
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| The science of living | | 1924 | W. H., Lloyd B. Gatten, Charles William Eliot | | | | | |
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| The science of regeneration | | 1911 | A. G-., Arthur Gould | | | | | |
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| Scientific and esoteric studies in sexual degeneration in mankind and in animals | | 1932 | Professor Charles Samson Fere, Anthropological, Charles Samson Féré | | | | | |
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| Search lights on health: light on dark corners; a complete sexual science and a guide to purity and physical manhood; advice to maiden, wife, and mother; love, courtship, and marriage | | 1916 | B. G. (Benjamin Grant) Jefferis, J. L. (James Lawrence) Nichols | | | | | |
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| Seventy birth control clinics: a survey and analysis including the general effects of control on size and quality of population | | 1930 | Caroline Hadley Robinson | | | | | |
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| Sex | | 1914 | Sir Patrick Geddes, J. Arthur (John Arthur) Thomson | | | | | |
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| Sex and common-sense | | 1922 | A. Maude (Agnes Maude) Royden | | | | | |
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| Sex and eternal youth: a frank, open, unveiled discussion of every phrase of the most important subject in man's existence--sex | | 1926 | Alice Jewel | | | | | |
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| Sex and human nature: (studies) | | 1933 | Boswell King | | | | | |
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| Sex and internal secretions | 3d ed. | 1961 | William C. (William Caldwell) Young, Edgar Allen | | | | | |
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| Sex and internal secretions: a survey of recent research | | 1932 | Kobert M. Yerkes, Edgar Allen | | | |  | |
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| Sex and life: a message to undergraduate men | | 1919 | Thomas Walton Galloway | | | | | |
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| Sex and love problems | | 1935 | Edward Parrish | | | | | |
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| Sex and religion: a study of their relationship and its bearing upon civilization | | 1925 | Clifford Howard | | | | | |
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| Sex and sex worship (phallic worship): a scientific treatise on sex | | 1919 | O. A. (Otto Augustus) Wall | | | | | |
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| Sex and the adolescent | | 1958 | Maxine Davis | | | | | |
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| Sex and the body builder | | 1936 | George F. (George Fiusdale) Jowett | | | | | |
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| Sex and the love-life | | 1927 | William J. (William John) Fielding | | | | | |
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| Sex and the social order | 1st ed. | 1946 | Georgene H. (Georgene Hoffman) Seward | | | | | |
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| Sex and the young | | 1926 | Marie Carmichael Stopes | | | | | |
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| Sex and the young | | 1926 | Marie Carmichael Stopes | | | | | |
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| Sex answers; 250 questions and answers on sex, marriage and divorce | | 1934 | Lester Meyers | | | | | |
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| Sex as symbol: the ancient light in modern psychology | | 1945 | Alvin Boyd Kuhn | | | | | |
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| Sex attitudes in the home | | 1956 | Ralph Glenn Eckert | | | | | |
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| Sex conduct in marriage (the art of maintaining love and happiness in marriage) | | 1922 | Bernard Bernard | | | | | |
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| Sex conduct in marriage (the art of maintaining love and happiness in marriage) | | 1926 | Bernard Bernard | | | | | |
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| Sex crimes | | 1960 | John. Drzazga | | | | | |
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| Sex culture talks to young men | | 1912 | Norman E. (Norman Egbert) Richardson | | | | | |
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| Sex development | | 1922 | Bernard Bernard | | | | | |
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| Sex development in apes | | 1928 | Harold Clyde Bingham | | | | | |
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| Sex differences in variational tendency: from the Department of psychology of Stanford university | | 1936 | Lewis M. (Lewis Madison) Terman, Quinn McNemar | | | | | |
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| Sex discipline for boys in the home | | 1914 | William Byron Forbush | | | | | |
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| Sex education: education in sexual physiology and hygiene, a physician's message | | 1926 | Philip Zenner | | | | | |
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| Sex education: facts and attitudes | | 1934 | | | | | | |
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| Sex education for the growing family: growing up with the Emersons | | 1959 | Alice Crow, Lester D. (Lester Donald) Crow | | | | | |
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| Sex education & the parent | | 1932 | Hugh Crichton Miller, Mrs. Elizabeth Macfarlane (Sloan) Chesser, Professor Sir J. Arthur Thomson | | | | | |
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| Sex endocrinology: A handbook for the medical and allied professions | 1st ed. | 1944 | | | | | | |
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| Sex expression in literature | | 1926 | Harry Elmer Barnes, V. F. (Victor Francis) Calverton | | |  | | |
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| The sex factor in human life: a study outline for college men | | 1921 | Thomas Walton Galloway | | | | | |
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| Sex: for parents and teachers | | 1921 | William Leland Stowell | | | | | |
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| Sex freedom and social control | | 1926 | Charles William Margold | | | | | |
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| Sex glands function and the human life | | 1930 | Contantine Leventis | | | | | |
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| Sex habits: a vital factor in well-being | | 1933 | Abraham Buschke, Eden Paul, Cedar Paul | | | | | |
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| Sex hygiene for the male and what to say to the boy | | 1912 | G. Frank (George Frank) Lydston | | | | | |
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| Sex hygiene: the anatomy, physiology, and hygiene of the sex organs | | 1926 | Julia Kinberg-von Sneidern, Alma Sundquist, Mary Elizabeth Collett | | | | | |
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| Sex in childhood | | 1933 | Ernest R. (Ernest Rutherford) Groves, Gladys Hoagland Groves | | | | | |
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| Sex in Christianity and psychoanalysis | | 1955 | William Graham Cole | | | | | |
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| Sex in civilization | | 1929 | V. F. (Victor Francis) Calverton, Havelock Ellis, Samuel Daniel Schmalhausen | | | | | |
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| Sex in modern life: a survey of sexual life in adolescence and marriage | | 1933 | Robert V. (Robert Vivian) Storer | | | | | |
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| Sex in real life | | 1929 | Frank Caleb Robinson | | | | | |
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| Sex in the arts: a symposium | | 1932 | John Francis McDermott, Kendall B. (Kendall Benard) Taft | | | | | |
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| Sex knowledge | | 1922 | Norah Helena March | | | | | |
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| Sex knowledge for men, including a program for sex education of a boy | | 1916 | William J. (William Josephus) Robinson | | | | | |
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| Sex knowledge for women and girls: what every woman and girl should know | | 1917 | William J. (William Josephus) Robinson | | | | | |
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| Sex life and home problems | | 1921 | J. Grant (Jacob Grant) Anderson | | | | | |
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| Sex life in Europe: a biological and sociological survey | | 1933 | Max Hodann, Jerome Gibbs | | | | | |
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| The sex life of boys and young men | | 1917 | William Herbert Brown | | | | | |
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| The sex life of the unmarried adult: an inquiry into and an interpretation of current sex practices | | 1934 | Ira Solomon Wile | | | | | |
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| The sex life of youth | | 1929 | Grace Loucks Elliott, Harry Bone | | | | | |
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| Sex, love and marriage | | 1932 | Dr. S. S. Weinberger, Samuel S. Weinberger | | | | | |
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| Sex, marriage and birth-control: a guide-book to a satisfactory sex life in marriage ; a practical handbook for the guidance of members of the medical, nursing and legal professions, the clergy and social workers | | 1936 | Alfred Henry Tyrer | | | | | |
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| Sex morality: past, present, and future | | 1912 | William J. (William Josephus) Robinson | | | | | |
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| Sex problems in worry and work | | 1915 | William Lee Howard | | | | | |
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| Sex problems of man in health and disease: a popular study in sex knowledge | | 1916 | Moses Scholtz | | | | | |
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| Sex relation in marriage | | 1933 | John Bristol | | | | | |
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| Sex revelations and the new eugenics: a safe guide for young men--young women | | 1937 | Clayton S. Whitehead, Charles A. Hoff | | | | | |
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| The sex ritual | | 1918 | A. J. Hart | | | | | |
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| The sex technique in marriage | | 1932 | Isabel Emslie Hutton, Ira S. AVile, Mrs Isabel Galloway (Emslie) Hutton | | | | | |
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| The sex technique in marriage | | 1936 | Ira S. Wile, Isabel Galloway Emslie Hutton | | | | | |
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| Sex tips: a brief analysis of the study of sex, giving information derived from a study of the best authorities, stated briefly and simply | | 1915 | John J. Caullet | | | | | |
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| Sex training in the home: plain talks on sex life covering all periods and relationships from childhood to old age | | 1914 | Winfield Scott Hall | | | | | |
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| Sex ways, in fact and faith: bases for Christian family policy | | 1961 | Evelyn Ruth Millis Duvall, Sylvanus Milne Duvall | | | | | |
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| Sex worship and disease (phallic worship): a scientific treatise on sex worship and its influence on religion and symbolism, with special reference to disease of the sexual organs | | 1935 | Mason Daugherty | | | | | |
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| The sex worship and symbolism of primitive races: an interpretation | | 1916 | Sanger Brown | | | | | |
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| Sex--the unknown quantity: the spiritual function of sex | | 1916 | Alexander J. (Alexander James) McIvor-Tyndall | | | | | |
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| Sex-education | | 1936 | Maurice A. (Maurice Alpheus) Bigelow | | | | | |
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| Sex-education; a series of lectures concerning knowledge of sex in its relation to human life | | 1916 | Maurice A. (Maurice Alpheus) Bigelow | | | | | |
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| The sex-education of children | | 1919 | William Byron Forbush | | | | | |
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| Sex-hygiene: a talk to college boys | | 1917 | Frederic Henry Gerrish | | | | | |
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| Sex | | 1914 | Sir Patrick Geddes, J. Arthur (John Arthur) Thomson | | | | | |
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| The sexes in science and history: an inquiry into the dogma of woman's inferiority to man | Rev. ed. | 1916 | Eliza Burt. Gamble | | | | | |
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| Sexo y salud | | 1928 | Bernarr Macfadden | | | | | |
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| Sexology | [Family medical ed.] | 1912 | William H. Walling | | | | | |
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| "Sexology for moderns" | | 1933 | John J. Otey | | | | | |
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| Sexual aberrations: the phenomena of fetishism in relation to sex | | 1930 | Wilhelm Stekel, Sam Parker | | | | | |
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| Sexual anomalies and perversions: physical and psychological development and treatment; a summary of the works of the late professor Dr. Magnus Hirschfeld ... compiled as a humble memorial by his pupils; a textbook for students, psychologists, criminologists, probation officers, judges, and educationists | | 1936 | Magnus Hirschfeld | | | | | |
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| Sexual behavior in penguins | | 1951 | L. E. (Lancelot Eric) Richdale | | | | | |
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| Sexual behavior; psycho-legal aspects | [1st ed.] | 1961 | Frank Samuel Caprio, Donald R. Brenner | | | | | |
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| The sexual crisis: a critique of our sex life | | 1917 | Meisel-Hess Grete, William J. Robinson, Eden Paul | | | | | |
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| Sexual deblility in man | | 1930 | F. R. (Frederic Russell) Sturgis | | | | | |
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| Sexual feeling in woman | | 1936 | George Lombard Kelly | | | | | |
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| Sexual guidance; author and publisher | | 1926 | Earle E. Liederman | | | | | |
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| Sexual hygiene (from an osteopathic viewpoint): a scientific discussion of physiological and pathological sexual relations | | 1922 | Eugene Howe. Henry | | | | | |
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| Sexual impotence | 6th ed., rev. | 1920 | Victor G. Vecki | | | | | |
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| Sexual impotence in the male | | 1959 | Leonard Paul. Wershub | | | | | |
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| Sexual impotence | 5th ed., enl. | 1915 | Victor G. Vecki | | | | | |
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| The sexual instinct: its use and dangers as affecting heredity and morals. Essentials to the welfare of the individual and the future of the race | | 1930 | James Foster Scott | | | | | |
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| The sexual instinct: its use and dangers as affecting heredity and morals. Essentials to the welfare of the individual and the future of the race | 2d ed., rev. and enl. | 1907 | James Foster Scott | | | | | |
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| Sexual jurisprudence | | 1911 | Rollin Clinton Blackmer | | | | | |
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| Sexual knowledge: the knowledge of self and sex in simple language: for the instruction of young people, young wives and young husbands, fathers and mothers, teachers and nurses, and all who feel a need of reliable information on the best way and the best time to impart sexual knowledge to boys and girls | | 1916 | Jeannette Winter Hall, Winfield Scott Hall | | | | | |
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| Sexual life | 2d ed., enl. and improved. | 1918 | Benzion Liber | | | | | |
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| Sexual life during the world war | | 1937 | E. X. Dubois, H. C. Fischer | | | | | |
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| The sexual life: embracing the natural sexual impulse, normal sexual habits and propagation, together with sexual physiology and hygiene | | 1928 | Charles William Malchow | | | | | |
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| Sexual life of man and woman | | 1919 | Benzion Liber | | | | | |
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| The sexual life of savages in north-western Melanesia: an ethnographic account of courtship, marriage and family life among the natives of the Trobriand Islands, British New Guinea | | 1929 | Bronislaw Malinowski | | | | | |
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| The sexual life of the child | | 1912 | Edward L. Thorndike, Albert Moll, Eden Paul | | | | | |
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| Sexual life | 4th, improved ed. | 1927 | Benzion Liber | | | | | |
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| Sexual misbehavior of the upper cultured: a mid-century study of behavior trends outside marriage in the United States since 1930. (Limited to white persons) | | 1955 | Arthur Henry Hirsch | | | | | |
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| Sexual pathology, being a study of the abnormalities of the sexual functions: an exhaustive treatise on sexual symbolism, hypereoticism [!], impotence, etc., based upon research, observations and recent clinical data gathered at the Institute for sexual science in Berlin | | 1932 | Magnus Hirschfeld, Jerome Gibbs | | | | | |
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| Sexual problems of to-day | | 1912 | William J. (William Josephus) Robinson | | | | | |
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| The sexual question: a scientific, psychological, hygienic and sociological study | Rev. ed. | 1922 | Auguste Forel | | | | | |
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| The sexual relations of mankind | | 1935 | Samuel Putnam, Victor Robinson, Paolo Mantegazza | | | | | |
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| Sexual responsibility in marriage | | 1963 | Maxine Davis | | | | | |
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| The sexual responsibility of woman | | 1956 | Maxine Davis | | | | | |
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| The sexual side of marriage | | 1932 | Max Joseph Exner | | | | | |
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| Sexual slavery in America | | 1935 | A. F. (Adolph Fredrick) Niemoeller | | | | | |
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| Sexual truths versus sexual lies, misconceptions, and exaggerations | | 1919 | William J. (William Josephus) Robinson | | | | | |
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| Sexual-analyse; psychologie des liebes- und ehelebens | | 1928 | Otto Rühle, Alice Rühle |  | | | | |
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| Sexualelend und sexualberatung: briefe aus der praxis | | 1928 | Max. Hodann | | | | | |
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| Sexualgeschichte der menschheit | | 1929 | Magnus Hirschfeld, Berndt Götz | | | | | |
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| Sexualkatastrophen; Bilder aus dem modernen Geschlechts- und Eheleben | | 1926 | Ludwig Levy Lenz, Magnus Hirschfeld | | | | | |
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| Sexualpädagogik; grundlagen und grundlinien | | 1934 | Rudolf Allers |  | | | | |
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| Shakespeares Hamlet: ein sexualproblem | | 1913 | Erich Wulffen | | | | | |
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| Simple methods of child training | | 1933 | Julius Gensler Moser | | | | | |
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| Single standard eugenics | | 1914 | Thomas Washington Shannon | | | | | |
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| The single, the engaged and the married | | 1936 | Maurice Chideckel | | | | | |
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| The single woman: a medical study in sex education | | 1934 | Robert Latou Dickinson, Lura Beam | | | | | |
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| Sittengeschichte der jüngsten Zeit: eine Darstellung der Kultur, Sittlichkeit und Erotik des zwanzigsten Jahrhunderts | | 1931 | Magnus Hirschfeld | | | | | |
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| So you think it's love!: Dating, necking, petting, going steady | [1st ed. | 1950 | Ralph Eckert | | | | | |
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| So youth may know: new viwepoints on sex and love | | 1930 | Percy R. Hay, Roy E. (Roy Ernest) Dickerson | | | | | |
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| Social control of sex espression | | 1930 | Geoffrey May | | | | | |
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| The social emergency: studies in sex hygiene and morals | | 1914 | William Trufant Foster | | | | | |
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| Social hygiene in schools: report of the Subcommittee on social hygiene in schools, William F. Snow, M.D., chairman, White house conference on child health and protection | | 1932 | William Freeman Snow, Thomas D. (Thomas Denison) Wood | | | | | |
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| The social psychology of hunger and sex | | 1939 | A. E. Ayau | | | | | |
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| Social travesties and what they cost | | 1916 | Donald Taylor Atkinson | | | | | |
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| Some more medical views on birth control | | 1928 | Norman Haire | | | | | |
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| Some more medical views on birth control | | 1928 | Norman Haire | | | | | |
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| Some sex beliefs and practices in a Navaho community: with comparative material from other Navaho areas | | 1950 | Flora L. Bailey | | | | | |
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| The spark of life: the story of how living things come into the world, as told for girls and boys | | 1913 | Margaret Warner Morley, Edward Bok | | | | | |
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| Spiel des unbewussten | | 1929 | D. H. (David Herbert) Lawrence, Walter Osborne | | | | | |
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| Sterility and choice of sex in the human family: a subject with which medical books do not deal | | 1916 | W. Wallace Hoffman | | | | | |
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| Sterility and conception | | 1922 | Charles Gardner Child | | | | | |
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| Sterility in the male and female and its treatment | | 1913 | Max Hühner | | | | | |
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| Sterility: office management of the infertile couple | | 1961 | Edward T. Tyler | | | | | |
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| Stop, look and think | | 1916 | Albert Myers Coleman | | | | | |
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| The story of life: an intelligent answer to the question, "Mother, where do babies come from?" | | 1933 | Ellis Wilbur Whiting | | | | | |
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| The story of sex | | 1932 | Mrs Helena Wright, Paul Popenoe | | | | | |
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| The strength of ten: telling what manhood is and how a boy may win it | | 1912 | Winfield Scott Hall | | | | | |
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| Studies in the psychology of sex | | 1936 | Havelock Ellis | | | | | |
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| A study of sex behavior in the white rat by means of the obstruction method | | 1927 | Lucien Hynes Warner | | | | | |
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| Suggestions for teaching selected material from the field of sex responsiveness, mating and reproduction | | 1940 | Edna Watson Bailey, Anita Duncan Elizabeth Laton | | | | | |
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| Surgical pathology of the female generative organs | | 1932 | Arthur Emanuel Hertzler | | | | | |
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| The symphony of life | | 1936 | Dr. Forrest E. Dowey, Forrest Eugene Dowey | | | | | |
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| A synthesis of human behavior: an integration of thought processes and ego growth | | 1954 | Joseph C. Solomon | | | | | |
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| Systolic blood-pressure fluctations with sex, anger and fear | | 1930 | John Culbertson Scott | | | | | |
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| Taboo and genetics: a study of the biological, sociological and psychological foundation of the family | | 1920 | Phyllis Blanchard, Melvin Moses Knight, Mrs. Iva (Lowther) Peters | | | | | |
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| Taboo: the story of the pioneers of social hygiene | | 1961 | Charles Walter Clarke | | | | | |
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| Teaching sex hygiene in the public schools | | 1914 | L. U. Lowry, Edith Belle Lowry | | | | | |
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| Temperament and sex in life and art | | 1919 | Walter Heaton | | | | | |
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| Ten sex talks to girls: (14 years and older) | | 1914 | Irving David Steinhardt | | | | | |
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| Tender bottoms: a psychosexual study in morals, based on personal experiences and documentary evidence | | 1934 | Doctor Pierre Guenoles, Pierre Guénolé | | | | | |
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| Tesis practica sobre perturbaciones de la funcion sexual en el hombre y en la mujer | | 1920 | Max Huhner | | | | | |
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| Test tube babies: a history of the artificial impregnation of human beings | | 1934 | Hermann Rohleder, John Hill | | | | | |
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| A textbook of sex education for parents and teachers | | 1921 | Walter Matthew Gallichan | | | | | |
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| "The open door" to a clean sex life: a real sex-book for adults | | 1927 | Bernard C. Roloff | | | | | |
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| The theory of psychoanalysis | | 1915 | C. G. (Carl Gustav) Jung | | | | | |
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| "They shall know themselves into one": a study in higher mental hygiene | | 1914 | Jessie Thomas Knapp | | | | | |
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| Things we don't talk about | | 1934 | James Albert Richards | | | | | |
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| A thousand marriages; a medical study of sex adjustment | | 1931 | Robert Latou Dickinson, Lura Beam | | | | | |
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| Three contributions to the sexual theory | | 1910 | James J. Putnam, A. A. (Abraham Arden) Brill, Sigmund Freud | | | | | |
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| Three contributions to the theory of sex | | 1930 | A. A. (Abraham Arden) Brill, Sigmund Freud | | | | | |
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| Three contributions to the theory of sex | 3d rev. ed. | 1918 | James J. Putnam, A. A. (Abraham Arden) Brill, Sigmund Freud | | | | | |
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| Three contributions to the theory of sex | 2d rev. and enl. ed. | 1916 | James J. Putnam, A. A. (Abraham Arden) Brill, Sigmund Freud | | | | | |
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| Thurston's philosophy of marriage | | 1927 | William Robert Thurston | | | | | |
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| A timely warning | | 1935 | Ernest Austen | | | | | |
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| The torch of life: a key to sex harmony | | 1932 | Frederick M. (Frederick Magee) Rossiter | | | | | |
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| The Torch of Life: A Key to Sex Harmony | | 1939 | Frederick M. (Frederick Magee) Rossiter | | | | | |
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| Toward manhood | [1st ed.] | 1951 | Herman Niels Bundesen | | | | | |
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| Training in chastity: a problem in Catholic character education | | 1930 | Felix Marie Kirsch | | | | | |
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| The truth about birth control | | 1927 | Bernard Bernard | | | | | |
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| The truth about birth control by famous authorities | | 1927 | Bernard Bernard | | | | | |
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| Truths; talks with a boy concerning himself | | 1911 | Edith Belle Lowry | | | | | |
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| Études d'éthique sexuelle | | 1929 | René Guyon | | | | | |
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| The Turkish art of love | | 1933 | Pinhas Nahum | | | | | |
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| The twilight of parenthood | | 1934 | Enid. Charles | | | | | |
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| The twilight of parenthood: a biological study of the decline of population growth | | 1934 | Enid. Charles | | | | | |
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| Understanding ourselves: the fine art of happiness | | 1926 | Harold Dearden | | | | | |
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| A unique heathen, to which is now added Theodore Schroeder on the erotogenesis of religion, a bibliography | | 1922 | Nancy Eleanor Sankey-Jones | | | | | |
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| Venus Oceanica: The sexual life of South sea natives, by Professor B. Schidloff [!] Erotic rituals of Australian aboriginals, by Doctor H. Basedow. Ethnopornographia, by Doctor W. E. Roth | | 1935 | Professor B. Schidloff, Doctor H. Basedow, Doctor W. E. Roth | | | | | |
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| Verheiratet: ein buch von mann und frau | | 1933 | Gerhard Joseph Winands, Johannes Baptista Deelen | | | | | |
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| Vita sexualis: az ember nemi élete | | 1924 | |  | | | | |
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| Vom jüngling zum mann: ein ernstes wort zur sexuellen lebensführung | | 1911 | Georg Hermann Theodor Buschan | | | | | |
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| Vom keim zum leben | | 1913 | Kurt Lampert | | | | | |
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| Vom kosmogonischen eros | | 1930 | Ludwig Klages | | | | | |
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| Vom Liebesleben der Tiere | | 1926 | Carl W. (Carl Wilhelm) Neumann | | | | | |
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| Vom Mädchen zur Frau: ein Zeitgemässes erziehungs und Ehebuch, allen reifen Töchtern, Gattinnen, Müttern und Volkserziehern gewidmet | 44.-46. Tausend. | 1912 | Emanuele L. M. Meyer | | | | | |
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| Vom wunder des lebens | | 1921 | Gertrud Prellwitz | | | | | |
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| Vor heiligen Toren: ein Aufklärungsbuch der Jugend zum Eintritt ins Leben und in den sittlichen Kampf : ein Vademecum auch den Erziehern und Jugendfreunden | | 1913 | Emanuele L. M. Meyer | | | | | |
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| Watchful elders: a word to parents and educators about educating children to purity | | 1929 | Kilian Joseph Hennrich | | | | | |
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| The way life begins: an introduction to sex education | | 1917 | Vernon Mo, William Freeman Snow, Vernon Mosher Cady | | | | |  |
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| The way of all women: a psychological interpretation | | 1933 | Ida Sedgwick Proper, M. Esther (Mary Esther) Harding | | | | | |
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| We need one another | | 1932 | D. H. (David Herbert) Lawrence | | | | | |
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| We young men | | 1911 | Hans Wegener | | | | | |
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| The well of loneliness | | 1928 | Radclyffe Hall | | | | | |
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| Wer es fassen kann | | 1932 | Josef Dillersberger | | | | | |
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| What a father should tell his little boy | | 1911 | Isabelle Thompson Smart | | | | | |
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| What a father should tell his son | | 1911 | Isabelle Thompson Smart | | | | | |
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| What a man of forty-five ought to know | | 1928 | Sylvanus Stall | | | | | |
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| What a mother should tell her daughter | | 1911 | Isabelle Thompson Smart | | | | | |
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| What a mother should tell her little girl | | 1911 | Isabelle Thompson Smart | | | | | |
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| What a woman of forty-five ought to know | | 1928 | Emma F. Angell (Emma Frances Angell) Drake | | | | | |
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| What a young boy ought to know | | 1926 | Sylvanus Stall | | | | | |
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| What a young boy ought to know | | 1928 | Sylvanus Stall | | | | | |
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| What a young boy ought to know | | 1936 | Sylvanus Stall | | | | | |
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| What a young girl ought to know | | 1928 | Sylvanus Stall, Mary Wood-Allen, Mrs. Mary WoodAllen | | | | | |
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| What a young husband ought to know | | 1936 | Sylvanus Stall | | | | | |
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| What a young husband ought to know | [New rev. ed.] | 1907 | Sylvanus Stall | | | | | |
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| What a young man ought to know | | 1928 | Sylvanus Stall | | | | | |
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| What a young man ought to know | | 1936 | Sylvanus Stall | | | | | |
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| What a young woman ought to know | | 1928 | Mrs. Mary Wood- Allen, Mary Wood-Allen | | | | | |
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| What a young woman ought to know | [New rev. ed.] | 1913 | Sylvanus Stall, Mary Wood-Allen | | | | | |
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| What every man and woman should know about the Bible | | 1917 | Sidney C. (Sidney Calhoun) Tapp | | | | | |
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| What every mother should know: or, How six little children were taught the truth | (3d rev. ed.) | 1916 | Margaret Sanger | | | | | |
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| What is wrong with marriage | | 1929 | Kenneth Macgowan, Gilbert Van Tassel Hamilton | | | | | |
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Public Domain Books