Hagen, Oskar Frank Leonard, 1888–(no earlier than 1955)
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 43325
Oskar Frank Leonard Hagen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Art epochs and their leaders: a survey of the genesis of modern art | 1927 | Author | |  | |  | | ||