Freshwater unionacean clams (Mollusca: Pelecypoda) of North America,
by J. B. Burch.
|Main Author:||Burch, J. B. 1929-|
[Washington, U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1973.
> North America
"Project 18050 ELD, contract 14-12-894."
Prepared by the Oceanography and Limnology Program, Smithsonian Institution, for the Environmental Protection Agency.
xi, 176 p.
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