Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 44 History 43 Literature 38 Plant diseases 37 Novel 32 Plant pathogens 31 Plant Pests, (New March 2000) 28 Plant pests 25 Biography 22 Taxonomy 21 India 20 Plant Breeding and Genetics 19 Plant disease control 19 Crop Produce 18 Shrubs 18 Women 18 Horticultural Crops, (New March 2000) 17 Plant Production 17 Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 16 Taxonomy and Evolution 16 മലയാളം; മലയാളം നോവല്‍ 16 Fungi 15 Pest control 15 Epidemiology 14 Fungal diseases 14 Prion, Viral, Bacterial and Fungal Pathogens of Humans, (New March 2000) 14 Host Resistance and Immunity 13 Politics and government 13 Bacterial diseases 12 Crop production 12