Hayn, Julius J. H.
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2436796A
- pdbooks.info ID: 35634
Julius J. H. Hayn Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| A geometry reader | 1925 | Author | |  | |  | | 
| |