Institutions Policy and Planning 3 Water Resources 3 Watershed management Watersheds 3 Agencies and Organizations 2 Land Resources 2 Land use 2 Natural Resource Economics, (New March 2000) 2 Agricultural Economics 1 Agricultural development 1 Arid regions 1 Case studies 1 Community Participation and Development, (New March 2000) 1 Community involvement 1 Conservation of natural resources 1 Decision making 1 Deforestation 1 Economic policy 1 Education and Training 1 Erosion 1 Erosion: Soil and Water Conservation 1 Evaluation 1 Extension and Advisory Work 1 Forests and Forest Trees (Biology and Ecology) 1 Hydrology 1 Institution building 1 Integrated water development 1 Irrigation 1 Irrigation systems 1