01866nam 2200505 450 991071254160332120210310111339.0(CKB)5470000002494737(OCoLC)1220931114(EXLCZ)99547000000249473720201116d1979 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierPortland study element /by Hamilton Test Systems, IncorporatedAnn Arbor, Michigan :United States Environmental Protection Agency, Motor Vehicle Emission Lab,1979.1 online resource (3 volumes) illustrations"EPA-460/3-79-001"--I."March 1979"--I, cover."EPA-460/3-79-003"--II."May 1979"--II, cover."EPA-460/3-79-009"--III."July 1979"--III, cover."Authors: David A. Smith"--Technical report data.Chiefly tables.I. Short test correlation study -- II. I/M effectiveness study -- III. Post - I/M deterioration study.AutomobilesMotorsExhaust gasAnalysisAutomobilesInspectionOregonPortlandAutomobilesMotorsExhaust systemsTestingAir quality managementUnited StatesAutomobilesMotorsExhaust gasAnalysis.AutomobilesInspectionAutomobilesMotorsExhaust systemsTesting.Air quality managementSmith David A.148124Motor Vehicle Emission Laboratory (U.S.),Hamilton Test Systems (Phoenix, Ariz.),GPOGPOBOOK9910712541603321Portland study element3517730UNINA