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Final regulatory impact analysis (RIA) for the SOb2s National Ambient Air Quality Standards (NAAQS)

Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, Air Benefit-Cost Group, 2010. 2010

Policy assessment for the review of the secondary national ambient air quality standards for oxides

United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, author.
Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, 2011. 2011