This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
TWO MOTORISTS WATCH AS CARBON MONOXIDE AND HYDROCARBON EMISSION READINGS ARE REGISTERED ON THE EXHAUST ANALYZER. THE... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Eiler Lyntha Scott Photographer File TWOMOTORISTSWATCHASCARBONMONOXIDEANDHYDROCARBONEMISSIONREADINGSAREREGISTEREDONTHEEXHAUSTANALYZER