Thesis (Ph. D.)--University of Pennsylvania, 1918. / Includes bibliographical references (p. 18).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/262535608 |
| Date | January 1918 |
| Creators | Shoemaker, Harry M. |
| Publisher | Lancaster, Pa. : Press of the New Era Print. Co., |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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