RT null T1 GIS and Earth Observation A1 United Nations Statistics Division, K1 geospatial information management YR 2023 FD 2023-10 LK https://wedocs.unep.org/handle/20.500.11822/44548 UL https://wedocs.unep.org/handle/20.500.11822/44548 DS UN Environment Document Repository RD Sep 23, 2026