Piper, Hartmut, 1878–
Nationality: Undetermined, possibly 
(Germany)
Identities and Authority Control
- Open Library: OL2271561A
- pdbooks.info ID: 42341
Hartmut Piper Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
 |  |  | 
| ||||||
| Die gesetze der weltgeschichte | 1928 | Author | |  |  | | | ||
| Die Gesetze der Weltgeschichte: Völkerbiologie | 1926 | Author | | | | | | ||