Shelton, John, C., compiler.
[Ann Arbor, Mich.] : Test and Evaluation, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, U.S. Environmental Protection Agency, August 1981.
1981-
Syria, Stanley L., author.
[Ann Arbor, Mich.] : Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Sources, U.S. Environmental Protection Agency, January 1983.
1983-