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The American naturalist.
Chicago, Illinois : University of Chicago Press
v. : ill., maps ; 24-27 cm.
Addresses ecology and evolutionary biology; devoted to the conceptual unification of the biological sciences.
Issued on microfilm from University Microfilms; in microfiche from Johnson Associates; some recent issues published also online; Scanned images of back issues are available via the World Wide Web to subscribers of JSTOR.