TY - GEN AU - United Nations Environment Programme PY - 2018 UR - https://wedocs.unep.org/handle/20.500.11822/26676 LA - English KW - ozone KW - ozone-depleting substance KW - ozone layer KW - hydrofluorocarbon KW - air-conditioning KW - refrigeration KW - Ozone TI - OzoNews Volume XVIII - 30 April 2018 M3 - Communication or other resource ER -