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GSTDTAP

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共55条，第1-20条
Government of Canada 40 EurekAlert 25 Natural Environment 21
us environmental pro 21 Environmental Monito 20 United Nations Envir 20
US Environmental Pro 12 World Wide Fund for 12 Cary Institute of Ec 10
US National Scientif 10 UK Environment Agenc 7 Woods Hole Oceanogra 7
Department of Conser 6 International Union 6 Plymouth Marine Labo 6
UN Sustainable Devel 6 Eco-Business Researc 5 Scripps Institution 5
Convention on Biolog 4 Environmental Protec 4