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

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

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

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

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

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

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

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