Gruen, Ferdinand Bernard, 1882–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2317522A
- pdbooks.info ID: 87512
Ferdinand Bernard Gruen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Catechism of the Third order of St. Francis | 1914 | Author | |  | |  | | ||
| English grammar in American high schools since 1900 | 1934 | Author | | | | | | ||