Thesis (Ph. D.)--University of Pennsylvania.
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/586059393 |
Date | January 1926 |
Creators | Crawford, William Rex, |
Publisher | Philadelphia [Westbrook Pub. Co.] |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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