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Rand Corporation 223 Asian Development Ba 187 EurekAlert 174
US Geological Survey 97 RAND Corporation 63 National Academies P 42
World Wide Fund for 42 Science 37 Institute for Europe 34
Federal Environment 32 United States Depart 32 Imperial College Lon 27
UN Sustainable Devel 25 World Resources Inst 24 Ecologic Institute ( 23
Global Environment F 21 European Geosciences 20 World Business Counc 20
Center for Strategic 18 Australian Academy o 17