A review of the North American freshwater snail genus Pyrgulopsis (Hydrobiidae) /

Bibliographic Details
Main Author:	Hershler, Robert
Corporate Author:	Smithsonian Institution. Press
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : Smithsonian Institution Press, 1994.
Series:	Smithsonian contributions to zoology ; no. 554.
Subjects:	Pyrgulopsis > North America > Classification.

Evans: US Documents (Annex 5th floor)