TY - GEN AU - United Nations Environment Programme PY - 2018 UR - https://wedocs.unep.org/handle/20.500.11822/26580 LA - English KW - ozone KW - ozone-depleting substance KW - ozone layer KW - refrigeration TI - OzoNews Volume XVIII - 30 September 2018 M3 - Communication or other resource ER -