Thesis (Ph. D.)--University of Pennsylvania, 1938. / "Reprint from the Pennsylvania bulletin, vol. VII, nos. 6-12, vol. VIII, nos. 1-4." Bibliography: p. 133-135.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/574550961 |
| Date | January 1940 |
| Creators | Rowlands, David Thomas, |
| Publisher | Philadelphia, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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