Syria, Stanley L., author.
[Ann Arbor, Mich.] : Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, U.S. Environmental Protection Agency, 1981.
1981
Verrelli, Leonard D., author.
[Ann Arbor, Mich.] : Power Systems Section, Test and Evaluation Branch, Environmental Protection Agency, September 1972.
1972-
Gompf, Henry L., author.
[Ann Arbor, Mich.] : Division of Motor Vehicle Research and Development, National Air Pollution Control Administration, Department of Health, Education, and Welfare, September 1970.
1970-