Issued also as Thesis (Ph. D.)--Columbia University. / Bibliography: p. 53-58.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/609788387 |
| Date | January 1931 |
| Creators | Voorhis, Thelma Grady, |
| Publisher | New York city, Pub. by Bureau of publication of Teachers college, Columbia University, for Lincoln school of Teachers college, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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