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![]() Date: 2010-09-16 07:00:20Earth Montreal Protocol Scientific Assessment of Ozone Depletion Ozone layer Chlorofluorocarbon Ozone Greenhouse gas International Day for the Preservation of the Ozone Layer Chlorodifluoromethane Ozone depletion Environment Chemistry | Source URL: ozone.unep.orgDownload Document from Source WebsiteFile Size: 57,62 KBShare Document on Facebook |