Presented as Thesis (Ph. D.)--University of Wisconsin--Madison, 1920. / Cover title. Reprinted from American naturalist - Part 1: vol. LII (Feb.-Mar. 1918), Part 2: vol. LV (July-Aug. 1921). Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/608557705 |
| Date | January 1900 |
| Creators | Lippincott, William Adams, |
| Publisher | [Lancaster, Pa. ; Garrison, N.Y.], |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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