Morphology and structure Bacterial genetics 1 Bacteriology 1 Classification of plant viruses 1 Economic importance 1 History of plant viruses 1 Management of virus diseases 1 Mycology the study of fungi 1 Pathogenicity and replication 1 Physiology and reproduction 1 Physiology of fungi 1 Purifications and properties 1 Reproduction of fungi 1 Taxonomy and classification 1 Virus diseases of food crops and vegetables 1