Extension and Advisory Work Agricultural Economics 7 Policy and Planning 5 Social Psychology and Social Anthropology, (New March 2000) 5 Technology transfer 4 Aid, (New March 2000) 3 Extension 3 Innovation adoption 3 Research 3 Agricultural development 2 Agroforestry 2 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 2 Diffusion of information 2 Education and Training 2 Natural Resource Economics, (New March 2000) 2 Plant Breeding and Genetics 2 Plant breeding 2 Policy 2 Resource management 2 Socioeconomics 2 Soil conservation 2 Training 2 Agribusiness 1 Agricultural biotechnology 1 Agricultural pests 1 Agricultural production 1 Agricultural research 1 Agricultural resources 1 Agricultural systems 1 Agroforestry systems 1