01634nam 2200421I 450 991071341200332120200505122607.0(CKB)5470000002501537(OCoLC)1153266857(EXLCZ)99547000000250153720200505d1966 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierMethods of computation of data from exhaust emission surveillance program /George W. Thomson[Ann Arbor, Mich.] :U.S. Public Health Service, National Air Pollution Control Administration,1966.1 online resource (ib, 64 pages) illustrations"GR 66-27.""June 1966.""Prepared for the U.S. Public Health Service under contract no. PH86-66-2 by Ethyl Corporation.""PB-269 566"--Page 1 of cover.AutomobilesMotorsExhaust gasUnited StatesObservationsAutomobilesUnited StatesPollution control devicesObservationsAirPollutionUnited StatesObservationsAutomobilesMotorsExhaust gasAutomobilesPollution control devicesAirPollutionThomson George W.133262Ethyl Corporation.United States.National Air Pollution Control Administration,GPOGPOBOOK9910713412003321Methods of computation of data from exhaust emission surveillance program3493765UNINA