Diffusion of information Extension 2 Extension and Advisory Work 2 Social Psychology and Social Anthropology, (New March 2000) 2 Agricultural Economics 1 Aid, (New March 2000) 1 Biological development 1 Climate 1 Climatic change 1 Climatic changes 1 Coffea 1 Coffee 1 Coffee wilt disease 1 Development aid 1 Disease resistance 1 Environmental policy 1 Epidemiology 1 Fungal diseases 1 Fungi 1 Gibberella xylarioides 1 Horticultural Crops, (New March 2000) 1 Horticultural Economics, (New March 2000) 1 Host Resistance and Immunity 1 Meteorology and Climate 1 Microbial Ecology, (New March 2000) 1 Microbial Life Cycles, (New March 2000) 1 Pathogen, Pest, Parasite and Weed Management (General) 1 Plant Breeding and Genetics 1 Plant breeding 1 Plant disease control 1