Context

Context of Clean Air Act amendments : hearings before the Subcommittee on Public Health and Welfare of the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-ninth Congress, first session on H.R. 463, H.R. 2105, H.R. 4001, H.R. 7065, H.R. 7394, H.R. 7429, H.R. 8007, H.R. 8398, H.R. 8723, H.R. 8800, and S. 306, bills relating to air pollution control, June 10, 11, 15, 16, and 29, 1965
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