"In partial fulfillment of the requirements for the degree of Doctor of philosophy ... University of Pennsylvania." cf. Pref., p. 4. / With reproduction of original t.-p. Bibliography: p. 121. Bibliography: p. 121. Also available in digital form on the Internet Archive Web site.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/3145026 |
| Date | January 1906 |
| Creators | Chapman, George, Shirley, James, Lehman, Ezra, |
| Publisher | Philadelphia, Published for the University, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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