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United Nations Environment Programme ,  [Final evaluation of the assessment of the pollution status and vulnerability of the water supply aquifers of African cities] ,  Final evaluation of the assessment of the pollution status and vulnerability of the water supply aquifers of African cities

United Nations Environment Programme ,  [Gems-water operational guide] ,  Gems-water operational guide

United Nations Environment Programme ,  United Nations Educational Scientific and Cultural Organization ,  World Health Organization (WHO) ,  [Water quality assessments: a guide to the use of biota, sediments and water in ecosystems] ,  Water quality assessments: a guide to the use of biota, sediments and water in ecosystems

United Nations Environment Programme ,  Oregon State University (OSU) ,  Universidad Nacional Costa Rica; ,  [Hydropolitical Vulnerability and Resilience along International Waters] ,  Hydropolitical Vulnerability and Resilience along International Waters