Thesis (Ph. D.)--University of Pennsylvania, 1939. / Includes bibliographical references (p. 91-94).
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/591821928 |
Date | January 1939 |
Creators | Willen, Henry, |
Publisher | Philadelphia : [s.n.], |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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