Directory of zoological taxonomists of the world Blackwelder, Richard E. (Richard Eliot), 1909-2001 creator Blackwelder, Ruth M. contributor text book Carbondale, Ill Published for the Society of Systematic Zoology by Southern Illinois University Press 1961 1961
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ENG Directories Paleontologists Taxonomists Zoologists QL35 .B55 590.12 https://www.biodiversitylibrary.org/bibliography/6004 1028066 61015306 10.5962/bhl.title.6004 DLC/ICU