Endler, John A., 1947- Geographic variation, speciation, and clines / John A. Endler. - Princeton, New Jersey : Princeton University Press, 1977. - ix, 246 p. : il. - Monographs in population biology ; 10 . Inclui índices. Bibliografia: p. 187-239. LCCN: 76045896 Subjects--Topical Terms: Clines.Evolução (Biologia). Dewey Class. No.: 575