TY  - GEN
AU  - United Nations
PY  - 2017
UR  - https://wedocs.unep.org/handle/20.500.11822/26763
LA  - English
KW  - ozone
KW  - ozone-depleting substance
KW  - ozone layer
KW  - Ozone
TI  - Message on the International Day for the Preservation of the Ozone Layer "Marking the 30th Anniversary of the Montreal Protocol" - 16 September 2017
T2  - 保护臭氧层国际日致辞 “庆祝《蒙特利尔议定书》三十周年”
M3  - Meeting resource
ER  -