Thesis (PH. D.)--Columbia University, 1919. / Vita. Published also as Contributions to education, no. 109, Teachers College, Columbia University. eContent provider-neutral record in process. Description based on print version record. "Selected references": p. 225-226.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/606186711 |
| Date | January 1920 |
| Creators | Berkson, Isaac Baer, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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