Economic impact 20 Policy and Planning 10 Environmental impact 9 Leisure, Recreation and Tourism Economics, (New March 2000) 9 Natural Resource Economics, (New March 2000) 9 Tourism and Travel 9 Agricultural Economics 7 Social impact 7 Sustainability 6 Agriculture 5 Case studies 5 Social Psychology and Social Anthropology, (New March 2000) 5 Tourism 5 Agricultural policy 4 Management 4 Rural Development, (New March 2000) 4 Rural development 4 Tourism impact 4 Tourist industry 4 Agricultural research 3 Destinations 3 Ecotourism 3 Methodology 3 Natural Resources (General) 3 Planning 3 Research 3 Tourism development 3 Agencies and Organizations 2 Agricultural development 2 Agricultural sector 2