Help Save America's Pearly Mussels
Helfrich, Louis A. (Louis Anthony), 1942-
Neves, Richard J.
Weigmann, Diana L.
Speenburgh, Renee M.
Beaty, Braven B. (Braven Brock), 1962-
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Provides a brief look at freshwater mussels -- what they look like, where they live, what they eat, why they are valuable, how they are used, why some are in trouble, and how to protect these simple but important aquatic animals -- and includes a key for species identification.