RT null T1 Integrated Assessment of Low Carbon Transport at the National Level:Approach and Framework A1 United Nations Environment Programme, A2 P.R. Shukla, YR 2011 FD 2011-08 LK https://wedocs.unep.org/handle/20.500.11822/16941 UL https://wedocs.unep.org/handle/20.500.11822/16941 NO https://www.unep.org/transport/lowcarbon DS UN Environment Document Repository RD Sep 16, 2026