Mollusca & molluscoidea-- Zoology, Malacology 22 Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 19 Mollusca 11 Mollusks 9 Protozoan, Helminth and Arthropod Parasites of Humans, (New March 2000) 9 Invertebrates 8 Zoology 8 Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 7 Mollusca & molluscoidea 6 Natural enemies 6 Non-communicable Diseases and Injuries of Animals 6 Parasites 6 Plant Pests, (New March 2000) 6 Disease control 5 Fishes 5 Man 5 Pest control 5 Behaviour 4 Biochemistry 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 Insects 4 Mollusca- Physiology 4 Molluscs 4 Pathogens 4 Pesticides and Drugs; Control, (New March 2000) 4