Diseases 245 Plant diseases 235 Plant pathology 184 Plant disease 140 Medicine 81 Disease 55 Fishes-diseases 51 AIDS (Disease) 50 Communicable diseases 49 Epidemiology 47 plant disease 47 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 44 Viruses 42 Disorders & Diseases 41 Health, Mind & Body 41 Plant pathogens 39 Plant Pests, (New March 2000) 38 Virus diseases 38 Bacterial diseases 37 plant diseases 36 Disease control 33 Microbiology 33 Plant pests 33 Dissertations, Academic (Ph.D) 30 Taxonomy 29 plant pathology 29 Fungi 28 Parasitic diseases 28 Communicable Diseases 27 Pest control 27