Thesis (Ph. D.)--University of Pennsylvania, 1978. / Includes bibliographical references (leaves 284-292).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/68697578 |
| Date | January 1978 |
| Creators | Sconyers, David. |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
| Source | View document online |
| Coverage | Sudan Sudan Sudan |
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