01491nam 2200409 450 991071354770332120200522114244.0(CKB)5470000002502187(OCoLC)1155201249(EXLCZ)99547000000250218720200522d1982 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierThe Portland study /by H. Anthony Ashby[Ann Arbor, Mich.] :Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Sources, U.S. Environmental Protection Agency,1982.1 online resource (15 pages)"EPA-AA-TEB-82-7.""June 1982."AutomobilesOregonPortlandMaintenance and repairAutomobilesInspectionOregonPortlandAutomobilesMotorsExhaust gasOregonPortlandAir quality managementOregonPortlandAutomobilesMaintenance and repair.AutomobilesInspectionAutomobilesMotorsExhaust gasAir quality managementAshby H. Anthony1394014United States.Environmental Protection Agency.Office of Mobile Sources.Test and Evaluation Branch,GPOGPOBOOK9910713547703321The Portland study3450749UNINA