Gentry, John Robert, 1889–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL1873142A
- pdbooks.info ID: 171552
John Robert Gentry Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Immediate effects of interpolated rest periods on learning performance | 1940 | Author | |  | |  | | 
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