Thesis (Ph. D.)--University of Pennsylvania, 1921.
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/613005594 |
Date | January 1921 |
Creators | Wagner, Ernest Carl. |
Publisher | [Philadelphia?] |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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