Evaluation of desinfected and untreated drinking water supplies in chile by the 'H IND.2'o paper strip test - Castillo, G; Duarte, R; Ruiz, Z; Marucic, M T; Honorato, B; Mercado, R; Coloma, V; Lorca, V; Martins, Maria Therezinha; Dutka, B J (Water Research, 1994)