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限定条件 ((作者：United Nations Environment Programme) AND (发表日期：2011) AND (专题：地球科学))
共31条，第1-20条
United Nations Envir 42 World Meteorological 16 International Counci 8
Intergovernmental Oc 7 United Nations Devel 4 European Commission 3
United States 3 Intergovernmental Pa 2 United Nations Educa 2
United Nations Envir 2 World Resources Inst 2 African Ministerial 1
Asian Institute of T 1 Bubu Pateh Jallow 1 Environment and Secu 1
International Organi 1 Johnson Nkem 1 M. Alam 1
Organization for Eco 1 Organization for Sec 1