Biblio

Y. V. Ballestero Navia, “Contribución al conocimiento del género Anacroneuria Plecoptera: perlidae y su relación con la calidad del agua en el río Riofrío : Valle del Cauca”. Universidad del Valle, Facultad de Ingenieria, Cali, Colombia, p. 147 p. , tables, graphics, photos , 2003.

D. Saywell and Shaw, R., “Technical brief no. 61 : on-plot sanitation in urban areas”, Waterlines, an international journal of water, sanitation and waste, pp. p. 17-20 : 3 drwngs., 4 tab., 1999.

G. McGranahan, Environmental problems and the urban household in Third World countries. Stockholm, Sweden: Stockholm Environment Institute (SEI), 1991, p. 38 p.: 16 tab.

H. Garelick, Mara, D. D., Feachem, R. G., and Bradley, D. J., Sanitation and disease : health aspects of excreta and wastewater management, vol. no. 3. Chichester, UK: Wiley, 1983, p. xxvii, 501 p.

R. G. Feachem, Bradley, D. J., Garelick, H., and Mara, D. D., “Appropriate technology for water supply and sanitation : health aspects of excreta and sullage management : a state-of-the-art review”, vol. no. 3. World Bank, Washington, DC, USA, p. ix, 318 p. : fig., tab., 1980.