Issued also as Thesis (Ph. D.)--Columbia University. / Bibliography at end of each chapter except the first.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/609262339 |
| Date | January 1937 |
| Creators | Lyon, Margaret Charters, |
| Publisher | New York City, Teachers College, Columbia University, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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