GSTDTAP
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World Resources Inst 207 EurekAlert 116 Institute for Europe 111
World Business Counc 107 World Wide Fund for 100 UN Sustainable Devel 79
RAND Corporation 78 United Nations Envir 60 Imperial College Lon 53
Department for Envir 42 future earth 41 Scripps Institution 40
United States Depart 38 Ecologic Institute ( 36 The European Environ 35
Plymouth Marine Labo 33 Cary Institute of Ec 32 International Union 32
Global Environment F 31 Natural Environment 29