RT null T1 Rangeland Improvement in Arid and Semi-Mud Zones and its Environmental and Socio-Economic Aspects: Proceedings of the International Seminar A1 United Nations Environment Programme, A1 Economic and Social Commission for Asia and the Pacific, K1 land K1 arid zone K1 pasture and forage K1 remote sensing K1 desertification control YR 1987 FD 1987 LK https://wedocs.unep.org/handle/20.500.11822/29922 UL https://wedocs.unep.org/handle/20.500.11822/29922 NO The international seminar on Rangeland Improvement in the arid and Semi-Arid Zones and its Environmental and Socio-economic Aspects was held in accordance with project document PP/16201-86-03. DS UN Environment Document Repository RD Sep 18, 2026