Thesis (Ph. D.)--University of Pennsylvania, 1993. / Includes bibliographical references (leaves 270-280).
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/647227947 |
Date | January 1993 |
Creators | Ge, Wei. |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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