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Hildebrand, Samuel F.; Gilmore, Charles W.; Cochran, Doris M. / Cold-blooded vertebrates
(1930)
Chapter II: some evolutionary aspects of amphibians, pp. 173-176
Page 173
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Copyright 1930 by Smithsonian Institution Series, Inc.| For information on re-use, see: http://digital.library.wisc.edu/1711.dl/Copyright



