Hickman, A. J., & Colwill, D. M. (1982). The estimation of air pollution concentrations from road traffic. Transport and Road Research Laboratory.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHickman, A. J., और D. M. Colwill. The Estimation of Air Pollution Concentrations from Road Traffic. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHickman, A. J., और D. M. Colwill. The Estimation of Air Pollution Concentrations from Road Traffic. Transport and Road Research Laboratory, 1982.
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