[Ann Arbor, Mich.] : Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air and Waste Management, U.S. Environmental Protection Agency, 1976.
1976
United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division, author.
[Washington, D.C.?] : United States Environmental Protection Agency, Air and Radiation, 2003.
2003