Thesis (Ph. D.)--University of Pennsylvania, 1906. / Cover title. "Reprinted from the Bulletin of the Geographical Society of Philadelphia, January-July, 1906."
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/298012026 |
| Date | January 1906 |
| Creators | Tower, Walter Sheldon, |
| Publisher | [Philadelphia : s.n.], |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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