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- United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division, issuing body10
- United States. Environmental Protection Agency, issuing body8
- United States. Environmental Protection Agency. Assessment and Modeling Division, issuing body7
- Koupal, John W.5
- Motor Vehicle Emission Laboratory (U.S.)5
- United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Technology Assessment and Evaluation Branch, issuing body5
- United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Test and Evaluation Branch, issuing body5
- Austin, Thomas C.4
- United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division4
- Brzezinski, David J.3
- Glover, Edward L.3
- United States. Environmental Protection Agency. Office of Air and Radiation3
- United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division, issuing body3
- United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division, author3
- EPA/Industry Quality Control Symposium (1977 : Ann Arbor, Mich.). Dynamometer Quality Control Calibration and Characteristics, author2
- Energy and Environmental Analysis, inc., author2
- Gilmore, John2
- Gompf, Henry L.2
- Jones, Gary T.2
- Koupal, John2