Bertram, Otto, joint author, 1886–
Nationality: Undetermined, possibly 
(Germany)
Identities and Authority Control
- pdbooks.info ID: 142577
joint author Otto Bertram Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
 |  |  | 
| ||||||
| Orientierung auf überlandflügen auf grund praktischer erfahrungen | 1912 | Author | |  |  | | | 
| |