The course of evolution by differentiation or divergent mutation rather than by selection.

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Bibliographic Details
Author / Creator:Willis, J. C. (John Christopher), 1868-1958
Imprint:Cambridge [Eng.] Univ. Press, 1940.
Description:viii, 207 p. ill.
Language:English
Subject:
Format: Print Book
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/2216125