Thesis (Ph. D.)--University of Maryland, 1990. / Includes bibliographical references (leaves 400-407).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/649852318 |
| Date | January 1990 |
| Creators | Wang, Xianhua. |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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