Gray, Robert D. (Robert Davis), 1909–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL183553A
- pdbooks.info ID: 61308
Robert D. (Robert Davis) Gray Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Prices in colonial Pennsylvania | 1935 | Author | |  | |  | | ||
| Systematic wage administration in the Southern California aircraft industry | 1943 | Author |  |  | | | | 
| |
| Trends in foundry production in the Philadelphia area | 1929 | Author | | | | | | ||