Thesis--University of Pennsylvania. / Includes bibliographical references (p. 94-98).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/551329759 |
| Date | January 1940 |
| Creators | Lewand, Frank, |
| Publisher | Philadelphia : University of Pennsylvania, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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