Air quality and environmental factors
Subtitle: 5 reports prepared for the 53d annual meeting of the Highway Research Board.
Series: Transportation research record ;; 492
Publisher: Transportation Research Board, National Research Council
Published: 1974
Place of publication: Washington
Language: eng
Number of pages: 41
Subjects: Automobiles -- Motors -- Exhaust gas.; Automobiles -- Environmental aspects.
Notes: Includes bibliographical references.