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Possible strategies for the International Drinking Water and Sanitation Decade
(Washington D.C; Pan American Health Organization, 1979)
Posibles estrategias sobre el decenio internacional sobre agua potable y saneamiento
(Washington D.C; Organización Panamericana de la Salud, 1979)
Potable water supply and excreta disposal services during the decade of the 80's
(Washington D.C; Pan American Health Organization, 1979)