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GSTDTAP

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共50条，第1-20条
World Wide Fund for 105 Department of Conser 81 EurekAlert 81
Department for Envir 31 International Union 23 UK Environment Agenc 23
gov.uk - environment 21 Convention on Biolog 17 Government of Canada 16
Science 16 US Geological Survey 16 United Nations Envir 16
Environmental Monito 15 Cary Institute of Ec 12 United States Depart 12
Global Environment F 11 World Resources Inst 10 UN Sustainable Devel 8
Centre for Ecology & 7 Imperial College Lon 7