Hemispheric transport of air pollution - New York United Nations - "Air Pollution Studies No. 17, 18, 19, 20" "01493211: 2010- Part A: Ozone and particulate matter. (xxv, 278p)" . ISBN: 9789211170436 Standard No.: 191618 Source: Reference Collections Dewey Class. No.: "X4:(G:55), Q0/UN"