Thesis (Ph. D.)--University of Pennsylvania, 1929. / "Reprints from the Journal of comparative psychology, vol. VIII, no. 5 and vol. IX, no. 4."
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/562753662 |
| Date | January 1929 |
| Creators | Gengerelli, J. A. |
| Publisher | Philadelphia, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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