Clean Air Act amendments of 1977 : oversight hearing before the Subcommittee on Oversight and Investigations of the Committee on Interstate and Foreign Commerce, House of Representatives, Ninety-sixth Congress, first session, April 9, 1979
United States.Congress.House.Committee on Interstate and Foreign Commerce.Subcommittee on Oversight and Investigations.
Washington U.S.G.P.O.
1980
Air