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United Nations Environment Programme ,  [GEO Year Book 2004/5: An Overview of Our Changing Environment] ,  GEO Year Book 2004/5: An Overview of Our Changing Environment

United Nations Environment Programme ,  [Compilation of Internationally Agreed Environmental Goals and Objectives] ,  Compilation of Internationally Agreed Environmental Goals and Objectives

United Nations Environment Programme ,  [Guidebook for policy and legislative development on conservation and sustainable use of freshwater resources] ,  Guidebook for policy and legislative development on conservation and sustainable use of freshwater resources

United Nations Environment Programme ,  [GEO Year Book 2006] ,  GEO Year Book 2006

United Nations Environment Programme ,  [Status Report on The Application of Integrated Approaches to Water Resources Management] ,  Status Report on The Application of Integrated Approaches to Water Resources Management

United Nations Environment Programme ,  [Blue harvest: inland fisheries as an ecosystem service] ,  Blue harvest: inland fisheries as an ecosystem service

United Nations Environment Programme ,  United Nations Educational Scientific and Cultural Organization ,  [Evaluation of urban pollution of surficial and groundwater aquifers in Africa] ,  Evaluation of urban pollution of surficial and groundwater aquifers in Africa

United Nations Environment Programme ,  [Tunza vol. 8.1: avatar: reaching the heart] ,  Tunza vol. 8.1: avatar: reaching the heart

United Nations Environment Programme ,  [Vulnerability Assessment of Freshwater Resources to Climate Change] ,  Vulnerability Assessment of Freshwater Resources to Climate Change

United Nations Environment Programme ,  United Nations Educational Scientific and Cultural Organization ,  [Survey methods: groundwater, recharge in arid and semi-arid regions] ,  Survey methods: groundwater, recharge in arid and semi-arid regions