Tourism and Travel 80 Leisure, Recreation and Tourism Economics, (New March 2000) 69 Social Psychology and Social Anthropology, (New March 2000) 69 Policy and Planning 62 Sustainability 59 Natural Resource Economics, (New March 2000) 58 Plant Pests, (New March 2000) 58 Tourism 58 Plant Breeding and Genetics 53 Literature 51 Plant pests 49 Agricultural Economics 48 Horticultural Crops, (New March 2000) 48 History 47 Stories 44 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 44 Plants 42 Plant Production 40 Taxonomy and Evolution 40 Plant diseases 39 Behaviour 38 Man 37 Plant pathogens 36 Field Crops, (New March 2000) 35 Marketing and Distribution 35 Natural enemies 35 Pest control 35 Taxonomy 35 Case studies 34 Insects 34