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United States Depart 53 World Resources Inst 39 Department for Envir 31
EurekAlert 26 UK Environment Agenc 18 gov.uk - environment 18
United Nations Envir 12 Environmental Monito 11 World Wide Fund for 10
Department of Conser 8 Cary Institute of Ec 7 Global Environment F 6
UN Sustainable Devel 6 WEF Stormwater Repor 6 CNRS News 3
Environmental Protec 3 US Geological Survey 3 US National Scientif 3
us environmental pro 3 Center for Internati 2