Underwood, R. S. (Ralph Sylvester), 1891–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2080925A
- pdbooks.info ID: 91984
R. S. (Ralph Sylvester) Underwood Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Jaunts into space: informal excursions to the show places of the sky (photographs by Yerkes and Mount Wilson observatories) | 1935 | Author | |  | |  |  | ||
| Living mathematics | 2d ed. | 1949 | Author | | | | | | 
|
| Practical trigonometry | 1956 | Author | | | | |  |
| |