Issued also as a Thesis (Ph. D.)--Columbia University. / Bibliography: p. 67-68.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/607741266 |
| Date | January 1934 |
| Creators | Westfall, Leon H. |
| Publisher | New York city, Teachers college, Columbia University, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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