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Contribution of road traffic emissions to ambient air concentrations of hydrocarbons: the interpretation of monitoring measurements in Switzerland by Principal Component Analysis and road tunnel measurements
Johannes Staehelin, Rene Locher, Sigrid Monkeberg, Werner A. Stahel
International Journal of Vehicle Design (IJVD), 2001 Vol.27 No.1/2/3/4, pp.161-172
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