01906nam 2200457 a 450 991070141300332120120403104538.0(CKB)5470000002418952(OCoLC)783205460(EXLCZ)99547000000241895220120403d2009 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierReview of Particulate matter urban-focused visibility assessment (external review draft, September 2009)[electronic resource] /[signed Jonathan Samet]Washington, D.C. :U.S. Environmental Protection Agency, Office of the Administrator, Science Advisory Board, Clean Air Scientific Advisory Committee,2009.1 online resource (53 pages)Title from title screen (viewed on Apr. 3, 2012)."November 24, 2009.""EPA-CASAC-10-002."Includes bibliographical references.Review of Particulate matter urban-focused visibility assessment ParticlesEnvironmental aspectsUnited StatesVisibilityMeasurementUrban pollutionUnited StatesAir qualityStandardsUnited StatesParticlesEnvironmental aspectsVisibilityMeasurement.Urban pollutionAir qualityStandardsSamet Jonathan M23211United States.Environmental Protection Agency.Science Advisory Board.United States.Environmental Protection Agency.Clean Air Scientific Advisory Committee.GPOGPOBOOK9910701413003321Review of Particulate matter urban-focused visibility assessment (external review draft, September 2009)3518284UNINA