title: Growing ozone hole "hangover".
authors.forename: Kris
authors.initials: K
authors.lastname: Christen
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D001272:Atmosphere; D017402:Chlorofluorocarbons / Q000737:chemistry*; D017752:Greenhouse Effect; D007391:International Cooperation; D010126:Ozone / Q000737:chemistry*; D011640:Public Policy; D014480:United Nations
chemical_list: D000393:Air Pollutants; D017402:Chlorofluorocarbons; D010126:Ozone