Orr, Don Mathis
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 83264
Don Mathis Orr Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Agriculture for elementary schools | 1933 | Author | |  | |  | | ||
| Agriculture for elementary schools | 1935 | Author | | | | | | ||
| Agriculture for secondary schools | 1934 | Author | | | | | | ||
| First problems in agriculture | 1934 | Author | | | | | | ||
| Practical agriculture for high schools | 1937 | Author | | | | | | ||