Parasites-- Parasitology 94 Parasitology 67 Parasites 39 Plant Pests, (New March 2000) 32 Parasitic diseases 28 Pest control 26 Plant pests 26 Natural enemies 23 Plant diseases 22 Insects 21 Pathogens, Parasites and Infectious Diseases (Wild Animals), (New March 2000) 21 Taxonomy 21 Nematoda 20 Parasitism 20 Microbiology 19 Nematology 19 Pathogen, Pest, Parasite and Weed Management (General) 19 Plant parasitic nematodes 19 Plant pathology 19 Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 19 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 19 Biological Control 17 Fungi 17 Taxonomy and Evolution 17 Biological control 16 Medical microbiology 16 Protozoan, Helminth and Arthropod Parasites of Humans, (New March 2000) 16 Biological control agents 15 Horticultural Crops, (New March 2000) 15 Plant pathogens 15