Warner-Selph, Mary Ann, author.
[Ann Arbor, Mich.] : Technical Support Staff, Emission Control Technology Division, Office of Mobile Sources, Office of Air and Radiation, U.S. Environmental Protection Agency, July 1986.
1986-
[Ann Arbor, Mich.] : Technology Assessment and Evaluation Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, U.S. Environmental Protection Agency, December 1976.
1976-
Michael, R. Bruce, author.
Ann Arbor, Mich. : U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Inspection/Maintenance Staff, 1982.
1982