Thesis--University of Pennsylvania. / Without thesis statement. Bibliography: p. 251-258.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/609486577 |
| Date | January 1950 |
| Creators | Gregg, Davis W. |
| Publisher | Philadelphia, University of Pennsylvania Press, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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