. . . . . . . "Implementation of the superfund program : hearings before the Subcommittee on Commerce, Transportation, and Tourism of the Committee on Energy and Commerce, House of Representatives, Ninety-eighty Congress, first and second sessions, on November 10, 1983 ... November 16, 1983 ... November 22, 1983 ... January 25, 1984"@en . . . "Implementation of the superfund program hearings before the Subcommittee on Commerce, Transportation, and Tourism of the Committee on Energy and Commerce, House of Representatives, Ninety-eighty Congress, first and second sessions, on November 10, 1983 ... November 16, 1983 ... November 22, 1983 ... January 25, 1984"@en . . . . . . . . . . "United States. Environmental Protection Agency." . .