Air quality standards :
hearing before the subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, Ninety-eighth Congress, second session, October 1, 1984.
|Corporate Author:||United States.|
Washington : U.S. G.P.O., 1985.
United States. /
Environmental Protection Agency.
Air quality > Air quality / Standards > Air quality / Standards / United States.
"Serial no. 98-198."
iv, 1467 p. :
ill., forms ;
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