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 Allee, W. C. (Warder Clyde), 1885-1955 creator text book Chicago, Ill The University of Chicago press 1930, c1923 1923 1930
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ENG Classification Zoology QL352 .A5 1930 590.1 https://www.biodiversitylibrary.org/bibliography/6802 5575339 10.5962/bhl.title.6802 EXA