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A revision of the neotropical aquatic beetle genera Disersus, Pseudodisersus, and Potamophilops (Coleoptera: Elmidae) /

By Spangler, Paul J.. Washington, DC : Smithsonian Institution Press, 1987 , Shipping list no.: 87-481-P. | Abstract in English and Spanish.

By Spangler, Paul J.. Washington, DC : Smithsonian Institution Press, 1987 , Shipping list no.: 87-481-P. | Abstract in English and Spanish.