Thesis (PH. D.)--Johns Hopkins University, 1920. / Biography.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/648278317 |
| Date | January 1920 |
| Creators | Helfrich, Oregon Benson, |
| Publisher | Easton, Pa., Eschenbach Print. Co., |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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