A tentative classification of the palearctic unionids.
Series: [Field Museum of Natural History.  Publication] no. 464; Zoological series of Field Museum of Natural History, v. 24, no. 11; Fieldiana -- v. 24, no. 11; Publication (Field Museum of Natural History : 1909) -- 464
Published: 1940
Place of publication: Chicago
Subjects: Unionidae