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当前检索式 ((ALL：land conservation))
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共74条，第1-20条
Department of Conser 364 World Wide Fund for 142 United States Depart 128
EurekAlert 105 World Resources Inst 90 Global Environment F 83
International Union 67 United Nations Envir 50 World Business Counc 50
UN Sustainable Devel 44 Department for Envir 40 Institute for Europe 33
Convention on Biolog 28 us environmental pro 28 Department of the En 27
Scripps Institution 26 Environmental Monito 24 Government of Canada 22
UK Environment Agenc 22 gov.uk - environment 22