Title: National decade plans
Subjects: Drinking water, Water quality, International Drinking Water Supply and Sanitation Decade, 1981-1990, Health planning, Water-supply, Water Supply, Eau potable, Eau, Qualité, Décennie internationale de l'eau potable et de l'assainissement, 1981-1990, Santé publique, Planification, Approvisionnement, Sanitation