The message of the United Nations Secretary-General on the 2013 International Day for the Preservation of the Ozone Layer, 16 September 2013.
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/message-united-nations-secretary-general-2013-international-day-preservation-ozone
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/ozone-secretariat
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone-layer
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/montreal-protocol
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere-and-ozone-layer