Published also as Thesis (Ph. D.)--Columbia University, 1919. / Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/300902077 |
| Date | January 1920 |
| Creators | Amos, Flora Ross, |
| Publisher | New York, Columbia University Press, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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