TY - GEN AU - United Nations Environment Programme PY - 2019 UR - https://wedocs.unep.org/handle/20.500.11822/28675 LA - English KW - ozone layer KW - cooling KW - energy efficiency KW - ozone-depleting substance KW -  Energy Efficiency KW - Ozone TI - OzoNews Volume XIX - 30 June 2019 M3 - Communication or other resource ER -