Thesis--University of Pittsburgh. / Bibliography: p. 124-130.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/623294849 |
| Date | January 1971 |
| Creators | Vavrek, Bernard. |
| Publisher | [Pittsburgh] University of Pittsburgh, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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