TY - GEN AU - United Nations PY - 2016 UR - https://wedocs.unep.org/handle/20.500.11822/27011 LA - English PB - United Nations KW - ozone KW - ozone-depleting substance KW - ozone layer TI - The Secretary General's Message on the International Day for the Preservation of the Ozone Layer, 16 September 2016 T2 - 秘书长 保护臭氧层国际日致辞 2016 年 9 月 16 日 M3 - Communication or other resource ER -