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当前检索式 ((ALL：Environmental Challenge))
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共84条，第1-20条
World Business Counc 117 World Resources Inst 113 Scripps Institution 102
EurekAlert 79 Institute for Europe 79 United Nations Envir 75
Imperial College Lon 50 World Wide Fund for 49 us environmental pro 49
Natural Environment 48 Department for Envir 47 US Environmental Pro 39
Global Environment F 37 UN Sustainable Devel 29 UK Environment Agenc 28
Environmental Monito 27 gov.uk - environment 25 Center for Strategic 24
Environmental Protec 24 Eco-Business Researc 23