Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 19 Protozoan, Helminth and Arthropod Parasites of Humans, (New March 2000) 9 Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 7 Mollusks 6 Non-communicable Diseases and Injuries of Animals 6 Disease control 5 Man 5 Mollusca & molluscoidea-- Zoology, Malacology 5 Natural enemies 5 Parasites 5 Plant Pests, (New March 2000) 5 Behaviour 4 Biological Control 4 Biological control 4 Diagnosis 4 Genetics and Molecular Genetics (Wild Animals), (New March 2000) 4 Host Resistance and Immunity 4 Human diseases 4 Molluscs 4 Pathogens 4 Pest control 4 Pesticides and Drugs; Control, (New March 2000) 4 Phylogeny 4 Physiology and Biochemistry (Wild Animals), (New March 2000) 4 Public Health Pests, Vectors and Intermediate Hosts, (New March 2000) 4 Aetiology 3 Animal Genetics and Breeding, (New March 2000) 3 Animal Immunology, (New March 2000) 3 Animal Reproduction and Embryology, (New March 2000) 3 Animal behaviour 3