WHO -Geneva, CH, World Health Organization et Rome, I. T. F. A. O. -,
« Abastecimiento de agua potable y manejo de efluentes : cuestiones juridicas en la asignacion de recursos hidricos, uso de efluentes y manejo del agua potable ». World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 22 p., 1991.
WHO -Geneva, CH, World Health Organization,
Control of Chagas disease : report of a WHO Expert Committee, vol. no. 811. Geneva, Switzerland: World Health Organization (WHO), 1991, p. vi, 95 p.: 3 fig., 7 tab.
WHO -Geneva, CH, World Health Organization,
« Eau potable, assainissement et sante en milieu rural : rapport de la deuxieme consultation du Groupe du Travail OMS Eau- Assainissement- Sante, Geneve, 9-11 Avril 1991 ». World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. iii, 43 p., 1991.
WHO -Geneva, CH, World Health Organization,
« Water supply, sanitation and health in rural areas : report of the second consultation of the WHO Working Group on Water, Sanitation and Health, Geneva, 9-11 April 1991 ». World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. iii, 43 p., 1991.