Biblio

J. T. Visscher, Quiroga, R. E., Garcia, V. M., Benavides, A., Madera, P. C., and Cali, C. O. C. I. N. A. R. A. -, “Out of the mouths of babes : an honest evaluation of water and sanitation in Ecuador”, Waterlines, an international journal of water, sanitation and waste, pp. p. 19-22, 1996.

C. O. C. I. N. A. R. A. - Cali and IRC International Water and Sanitation Centre, The Hague, NL, “Diagnostico preliminar sobre saneamiento ambiental en escuelas de educacion basica primaria : informe final”. Centro Inter-Regional de Abastecimiento y Remocion de Agua, Cali, Colombia, p. 2 vol. (21, 121 p.): photogr., 1991.