Appel, Otto, 1867–1952
Nationality: Undetermined, possibly 
(Spain)
Identities and Authority Control
- pdbooks.info ID: 19264
Otto Appel Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
 |  |  | 
| ||||||
| El microscopio y sus aplicaciones | 1922 | Author | |  |  |  | | ||