Microbiology 64 Bacteria 45 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 44 Plant diseases 41 Bacterial diseases 37 Plant pathogens 32 Bacteriology 29 Plant Pests, (New March 2000) 28 Plant Breeding and Genetics 25 Plant pests 25 Genetics 22 Taxonomy 22 Bacterial genetics 20 Fungal diseases 19 Plant disease control 19 Bacterial Infections 18 Biotechnology 18 Crop Produce 18 Prokaryotae 18 Horticultural Crops, (New March 2000) 17 Plant Production 17 Fungi 16 Molecular biology 16 Pathology 16 Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 16 Taxonomy and Evolution 16 Plant pathology 15 Epidemiology 14 Fruit crops 14 Pest control 14