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Toxicity of four pesticides to water fleas and fathead minnows : acute and chronic toxicity of acrolein, heptachlor, endosulfan, and trifluralin to the water flea (Daphnia magna), and the fathead minnow (Pimephales promelas) /
Duluth, Minn. : Springfield, Va. : Environmental Research Laboratory-Duluth, Office of Research and Development, U.S. Environmental Protection Agency ; Available to the public through National Technical Information Services [distributor], 1976

Government Document Book
2
Toxicity of four pesticides to water fleas and fathead minnows : acute and chronic toxicity of acrolein, heptachlor, endosulfan, and trifluralin to the water flea (Daphnia magna), and the fathead minnow (Pimephales promelas) /
by Macek, Kenneth J., Lindberg, Mark A., Sauter, Scott, Buxton, Kenneth S., Costa, Patricia A.
Duluth, Minnesota : Environmental Research Laboratory-Duluth, Office of Research and Development, U.S. Environmental Protection Agency, 1976

Government Document Book
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