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World Health Organization ,  United Nations Environment Programme ,  Global Environment Monitoring System ,  [WHO/UNEP report on water quality : progress in the implementation of the Mar del Plata Action Plan and a strategy for the 1990s]

World Health Organization ,  United Nations Environment Programme ,  Global Environment Monitoring System ,  [WHO/UNEP report on water quality : progress in the implementation of the Mar del Plata Action Plan and a strategy for the 1990s]

Bartram, Jamie ,  Ballance, Richard ,  World Health Organization ,  United Nations Environment Programme ,  [Water quality monitoring : a practical guide to the design and implementation of freshwater quality studies and monitoring programs / edited by Jamie Bartram and Richard Ballance]

Chapman, Deborah V ,  World Health Organization ,  Unesco ,  United Nations Environment Programme ,  [Water quality assessments : a guide to the use of biota, sediments and water in environmental monitoring / edited by Deborah Chapman, 2nd ed]

Chapman, Deborah V ,  World Health Organization ,  Unesco ,  United Nations Environment Programme ,  [Water quality assessments : a guide to the use of biota, sediments and water in environmental monitoring / edited by Deborah Chapman, 2nd ed]

Bartram, Jamie ,  Ballance, Richard ,  World Health Organization ,  United Nations Environment Programme ,  [Water quality monitoring : a practical guide to the design and implementation of freshwater quality studies and monitoring programs / edited by Jamie Bartram and Richard Ballance]

United Nations Environment Programme ,  [Côte d’Ivoire Post-Conflict Environmental Assessment] ,  Côte d’Ivoire Post-Conflict Environmental Assessment

United Nations Environment Programme ,  United Nations Environment Programme Global Environment Monitoring System (GEMS)/Water Programme ,  United Nations World Water Assessment Programme (UN-WWAP) ,  [Water quality outlook] ,  Water quality outlook