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World Health Organization ,  [Guidelines for drinking-water quality, 4th ed]

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]

Adams, John ,  Bartram, Jamie ,  Chartier, Yves ,  Sims, Jackie ,  World Health Organization ,  [Water, sanitation and hygiene standards for schools in low-cost settings / edited by John Adams ... [et al], Normes relatives à l'eau, l'assainissement et l'hygiène en milieu scolaire dans les environnements pauvres en ressources / édité par John Adams ... [et al]Normas sobre agua, saneamiento e higiene para escuelas en contextos de escasos recursos / editado por John Adams ... [et al]]

Helmer, Richard ,  Hespanhol, Ivanildo ,  World Health Organization ,  [Water pollution control : a guide to the use of water quality management principles]

World Health Organization ,  [Guidelines for drinking-water quality, 4th ed]

World Health Organization ,  [Water quality interventions to prevent diarrhoea : cost and cost-effectiveness. / Prepared by Thomas F. Clasen and Laurence Haller]

World Health Organization ,  [Hardness in drinking-water : background document for development of WHO guidelines for drinking-water quality]

World Health Organization ,  [Potassium in drinking-water : background document for development of WHO guidelines for drinking-water quality]

World Health Organization ,  [Bromide in drinking-water : background document for development of WHO guidelines for drinking-water quality]