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- Nature conservation
- History 34
- Government policy 18
- Wilderness areas 18
- Conservation of natural resources 16
- National parks and reserves 16
- Environmental conditions 14
- Environmental policy 14
- Environmental protection 14
- Management 14
- Social aspects 14
- Environmental aspects 12
- Nature Conservation 12
- Biodiversity 10
- Biodiversity conservation 10
- Ecology 10
- Economic aspects 10
- Law and legislation 10
- Nature 10
- Philosophy 10
- Political aspects 10
- Wildlife conservation 10
- Citizen participation 8
- Conservation biology 8
- Conservationists 8
- Ecosystem management 8
- Effect of human beings on 8
- Endangered species 8
- Environment 8
- Land use 8
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Urban habitats
出版事項 1999An electronic book accessible through the World Wide Web; click to view
電子媒体 eBook -
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Wild ideas
出版事項 1995An electronic book accessible through the World Wide Web; click to view
電子媒体 会議録 eBook -
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