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
Michael, R. Bruce, author.
Ann Arbor, Mich. : U.S. Environmental Protection Agency, Office of Air, Noise, and Radiation, Office of Mobile Sources,Emission Control Technology Division, Technical Support Staff, 1983.
1983
[Ann Arbor, Mich.] : Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Technology Assessment and Evaluation Branch, 1974.
1974
[Ann Arbor, Mich.] : Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Technology Assessment and Evaluation Branch, 1976.
1976