Ellis, Robert Sidney, 1890–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2256440A
- pdbooks.info ID: 48882
Robert Sidney Ellis Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| The psychology of individual differences | 1928 | Author | |  | |  | | 
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| Standardizing teachers' examinations and the distribution of class marks | 1928 | Author | | | | | |
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