Message on the International Day for the Preservation of the Ozone Layer - 16 September 2014
The message of the United Nations Secretary-General on the 2014 International Day for the Preservation of the Ozone Layer - 16 September 2014 .
The message of the United Nations Secretary-General on the 2014 International Day for the Preservation of the Ozone Layer - 16 September 2014 .