International Secretariat for Water -Montreal, Que, CA, Secretariat International de l'Eau, Tilonia, I. N. Social Wor, y Manila, P. H. Approtech,
«Report of the International Seminar on Drinking Water and Sanitation for Grassroots Organizations, Tilonia, India, November 21-25, 1993 [papers]». International Secretariat for Water, Montreal, Que, Canada, p. 19 papers (ca. 150 p.), 1993.
