RT null T1 Angelica Salele A1 United Nations Environment Programme, K1 energy efficiency YR 2018 FD 2018 LK https://wedocs.unep.org/handle/20.500.11822/25251 UL https://wedocs.unep.org/handle/20.500.11822/25251 NO Angelica Salele DS UN Environment Document Repository RD Sep 17, 2026