TY - GEN AU - United Nations Environment Programme PY - 2018 UR - https://wedocs.unep.org/handle/20.500.11822/26802 LA - English KW - ozone KW - ozone-depleting substance KW - ozone layer KW - refrigeration KW - hydrofluorocarbon KW - global warming TI - Twinning of National Ozone Officers and Energy Policymakers M3 - Communication or other resource ER -