Population dynamics 22 Animal Ecology 5 Plant Pests, (New March 2000) 5 Autecology 4 Behaviour 4 Pest control 4 Plant pests 4 Sociobiology 4 Behaviour (Wild Animals), (New March 2000) 3 Behavioural ecology 3 Biological Control 3 Biological control 3 Biological development 3 Biomes 3 Genetics and Molecular Genetics (Wild Animals), (New March 2000) 3 Insect pests 3 Insects 3 Mathematics and Statistics 3 Natural enemies 3 Physiology and Biochemistry (Wild Animals), (New March 2000) 3 Reproduction, Development and Life Cycle (Wild Animals), (New March 2000) 3 Biogeography 2 Biological control agents 2 Biomathematics 2 Cultivars 2 Ecological genetics 2 Ecology 2 Economic analysis 2 Energy transfer 2 Environmental Pest Management 2