Agricultural Economics 5 CGIAR Agricultural research 3 Agriculture 3 Natural Resources (General) 3 Natural resources 3 Research 3 Agricultural development 2 International organizations 2 Methodology 2 Natural Resource Economics, (New March 2000) 2 Plant Breeding and Genetics 2 Resource management 2 Techniques and Methodology 2 Agencies and Organizations 1 Agricultural economics 1 Agricultural policy 1 Agricultural productivity 1 Agriculture (General) 1 Arachis hypogaea 1 Assessment 1 Barley 1 Biological Resources (Plant) 1 CIMMYT 1 Case studies 1 Cassava 1 Conservation 1 Costs 1 Crop improvement 1 Crop yield 1