by Homer T. Kemp, Robert L. Little, Verna L. Holoman, Ralph L. Darby[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1973
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by Byron J. Mechalas, Kenneth K. Hekimian, Lewis A. Schinazi, Ralph H. Dudley[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1972
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[by Batelle's Columbus Laboratories.] for the Environmental Protection Agency, Water Quality Office[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1971
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[by Arthur D. Little, Inc.] for the Environmental Protection Agency.[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1971
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[Authors: Thomas R. A. Davis and others. Prepared] for the Environmental Protection Agency, Water Quality Office[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1970
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[Thomas R. A. Davis ... et al.]National Technical Information Service1970
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