Koppel, Holger
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 178708
Holger Koppel Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| 2 x 2 = 5 | 1923 | Author | |  |  | | | ||