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共68条，第1-20条
Department of Conser 604 World Wide Fund for 331 EurekAlert 270
International Union 144 Convention on Biolog 99 Government of Canada 75
United Nations Envir 73 Global Environment F 65 Department for Envir 60
Department of the En 56 Science 49 Scripps Institution 46
UN Sustainable Devel 36 United States Depart 35 UK Environment Agenc 33
World Resources Inst 32 Institute for Europe 28 gov.uk - environment 28
Environmental Monito 27 US Geological Survey 22