Agricultural innovations Agriculture 35 Economic aspects 19 Research 12 History 6 Agriculture and state 5 Case studies 4 International cooperation 4 Agricultural productivity 3 Congresses 3 Diffusion of innovations 3 Food supply 3 Grain 3 Varieties 3 Agricultural ecology 2 Biotechnology 2 Land settlement 2 Management 2 Periodicals 2 Rice 2 Rural conditions 2 Rural development 2 Social aspects 2 Agricultural biotechnology 1 Agricultural laborers 1 Agricultural resources 1 Agricultural surveys 1 Agricultural systems 1 Change 1 Collected works 1