Transportation Air Quality: Selected Facts and Figures, February 2016
Transportation Conformity Regulations as of April 2012
Update on Controlling Greenhouse Gases from International Aviation
Exhaust Emissions from a Mercedes-Benz Diesel Sedan
Engineering and Development Program Plan - Aircraft Propulsion Systems Air Pollution
Exhaust Emissions from a Passenger Automobile Equipped with Electronic Fuel Injection
NASA Airspace Systems Environmentally Focused Research
Retro-fit Emission Control Devices for Pre-1968 Vehicles
Critical Issues in Aviation and the Environment, 2009
Exhaust Emissions from A 25 - Passenger Internal Combustion Engine Powered Gasoline Fueled Bus
Interim Report on Testing of a Mercedes Benz Diesel Sedan
Exhaust Emissions from Seven LP Gas Powered Vehicles
Results of Sulfate Tests on Prototype Vehicles
Transportation Air Quality; Selected Facts and Figures
Transitions to Alternative Vehicles and Fuels