The Pselaphidae of North America Brendel, Emil. creator Wickham, H. F. (Henry Frederick), 1866-1933 contributor text book Iowa City, Iowa Published by authority of the Regents 1890 1890
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ENG Beetles North America Pselaphidae QL596.P8 B74 1890 Bulletin from the laboratories of natural history of the State University of Iowa, v. 1, no. 3-4; v. 2, no. 1 https://www.biodiversitylibrary.org/bibliography/15416 https://www.biodiversitylibrary.org/bibliography/9321 29146192 10.5962/bhl.title.9321