Schuler, Alan E., author.
[Ann Arbor, Mich.] : Standards Development and Support Branch, Emission Control Technology Division, Office of Mobile Sources, Office of Air and Radiation, U.S. Environmental Protection Agency, August 1987.
1987-
[Ann Arbor, Mich.] : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Mobile Sources, Emission Control Technology Division, Technical Support Staff, 1984.
1984
United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division, author.
[Washington, D.C.] : United States Environmental Protection Agency, 2019.
2019