RT null T1 Middle East and West Asia Diesel Sulphur Levels T2 Middle East and West Asia Sulphur Map A1 United Nations Environment Programme, PB United Nations Environment Programme YR 2017 FD 2017-03 LK https://wedocs.unep.org/handle/20.500.11822/17533 UL https://wedocs.unep.org/handle/20.500.11822/17533 NO Diesel Fuel Sulphur Level: Middle East and West Asia Status NO https://www.unep.org/transport/PCFV DS UN Environment Document Repository RD Sep 17, 2026