Mercury pollution and enforcement of the Refuse Act of 1899. Part 1, July 1, 1971 : hearing before a subcommittee of the Committee on Government Operations, House of Representatives, Ninety-second Congress, first session
Washington : U.S. Government Printing Office, 1971. Washington, D.C. : For sale by the Superintendent of Documents, U.S. Government Printing Office [Getzville, New York] : William S. Hein & Company, [2013]