Tourism and Travel 74 Agricultural Economics 66 Biotechnology 65 Social Psychology and Social Anthropology, (New March 2000) 64 Policy and Planning 63 Leisure, Recreation and Tourism Economics, (New March 2000) 60 Plant Breeding and Genetics 60 Tourism 60 Management 57 Sustainability 57 Plants 56 Plant Pests, (New March 2000) 55 Natural Resource Economics, (New March 2000) 51 Agriculture 48 Genetics 48 Plant pests 48 Nutrition 47 Forestry 46 Radiochemistry 45 History 44 Horticultural Crops, (New March 2000) 43 Man 43 Plant Production 43 Philosophy 42 Taxonomy and Evolution 42 Behaviour 41 Pest control 39 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 38 Economics 37 Livestock 37