01723oam 2200469 a 450 991069700880332120230902161953.0(CKB)5470000002384818(OCoLC)613958553(EXLCZ)99547000000238481820100513d2010 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierParticulate matter urban-focused visibility assessment[electronic resource] second external review draftResearch Triangle Park, N.C. :U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards,[2010]1 online resource (246 unnumbered pages) illustrations (some color)Title from title screen (viewed May 12, 2010)."January 2010.""DRAFT - Do not quote or cite.""EPA 452/P-10-002."Supersedes EPA-452/P-09-005.Includes bibliographical references.Particulate matter urban-focused visibility assessment ParticlesEnvironmental aspectsUnited StatesVisibilityMeasurementUrban pollutionUnited StatesAir qualityStandardsUnited StatesParticlesEnvironmental aspectsVisibilityMeasurement.Urban pollutionAir qualityStandardsGPOGPOOCLCQGPOBOOK9910697008803321Particulate matter urban-focused visibility assessment3479691UNINA