Synoptic Key to the Phyla, Classes, and Orders of Animals ; With Particular Reference to Fresh-Water and Terrestrial Forms of the Moist Temperate Region in North America / Compiled by W. C. Allee ; Based on a Compilation Originally Made by v. E. Shelford.
doi 10.5962/bhl.title.6802
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Date
January 1, 1923
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The University of Chicago press,