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The emissions, dispersion and chemical transformation of traffic-originated nitrogen oxides in the Helsinki metropolitan area
An Karppinen, Jaakko Kukkonen, Mervi Konttinen, Jan Harkonen, Erkki, Rantakrans, Esko Valkonen, Tarja Koskentalo, Timo Elolahde
International Journal of Vehicle Design (IJVD), 1998 Vol.20 No.1/2/3/4, pp.131-136
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