Ashby, H. Anthony, author.
[Ann Arbor, Mich.] : Test and Evaluation Branch, Emission Control Technology Division, Office of Mobile Sources, U.S. Environmental Protection Agency, 1982.
1982
Smuda, Bill, author.
Ann Arbor, Michigan : Emission Control Technology Division, Office of Mobile Source Air Pollution Control, U.S. Environmental Protection Agency, November 1980.
1980-