Clean Air Act amendments :
hearing before the Subcommittee on Health and the Environment of the Committee on Energy and Commerce, House of Representatives, One Hundredth Congress, first session, on H.R. 2521, H.R. 3054, and H.R. 3196.

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Item Link Original Source
Full view   University of Minnesota
Full view   University of Minnesota
Full view   pt.1 University of California
Full view   pt.2 University of California