Thesis--University of Pennsylvania. / Microfilm-xerography. Ann Arbor, Mich. : University Microfilms International, 1978.--21 cm. Includes bibliographical references (leaves viii-ix).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/647312641 |
| Date | January 1958 |
| Creators | Chowning, Martha Ann. |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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