Ann Arbor, Michigan : Correlation Group, Testing Programs Branch, Engineering Operations Division, Office of Mobile Source Air Pollution Control, May 1981
[Ann Arbor, Mich.] : U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Technology Assessment and Evaluation Branch, 1976
Ann Arbor, Michigan : U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, 1975
[Ann Arbor, Mich.] : U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Technology Assessment and Evaluation Branch, 1975