Diesel particulate emissions : the United States, Europe, and Japan

by Rykowski, Richard A.,
Published: U.S. Environmental Protection Agency, Office of Mobile Sources, 1989

Shift schedules for emissions and fuel economy testing

by Rykowski, Richard A.,
Published: Standards Development and Support Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air and Waste Management, U.S. Environmental Protection Agency, 1977

Emission-related maintenance intervals for light-duty trucks and heavy-duty engines

by Rykowski, Richard A.,
Published: Standards Development and Support Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air, Noise and Radiation, U.S. Environmental Protection Agency, 1979

Analysis of technical issues relating to : California's request for waiver of federal preemption with respect to optional 100,000-mile exhaust emission standards and test procedure...

by Rykowski, Richard A.,
Published: Standards Development and Support Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air, Noise and Radiation, U.S. Environmental Protection Agency, 1979