Thesis--University of Pittsburgh. / Includes bibliographical references (leaves 271-279).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/649589113 |
| Date | January 1976 |
| Creators | Gibson, Margaret Alison. |
| Publisher | [S.l. : s.n.], |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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