RT null T1 UN Environment and Partners Train and Certify Saudi Arabian Technicians in Good Practices in Refrigeration and Air-Conditioning A1 United Nations Environment Programme, K1 ozone K1 ozone-depleting substance K1 ozone layer K1 Saudi Arabia YR 2016 FD 2016-10 LK https://wedocs.unep.org/handle/20.500.11822/26585 UL https://wedocs.unep.org/handle/20.500.11822/26585 DS UN Environment Document Repository RD Sep 19, 2026