Craigo, Ralph Thurman
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 142369
Ralph Thurman Craigo Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Shop mathematics | 1st ed. | 1912 | Author | |  | |  | |    
|