Maki, A. W., Geissel, L. D., and Johnson, H. E., 1976, The freshwater mussel (Anodonta sp.) as an indicator of environmental levels of 3-trifluoromethyl-4-nitrophenol (TFM): La Crosse, Wisconsin, U.S. Fish and Wildlife Service Investigations in Fish Control 70, 7 p. Abstract Keywords