Biblio

L. J. M., Wegelin, M., and G. C., G., “La filtracion gruesa en el tratamiento de agua de fuentes superficiales”, vol. no. 4/98. SKAT (Swiss Centre for Development Cooperation in Technology and Management), St. Gallen, Switzerland, p. vi, 170 p. : fig., photogr., tab., 1998.

J. T. Visscher, J. M., L., G. C., G., and Ochoa, A. E., “Comparison of horizontal and upflow roughing filtration”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 341-348 : 2 fig., 6 tab.

J. T. Visscher, J. M., L., and G. C., G., “Performance evaluation of dynamic roughing filtration”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 349-358 : 5 fig., 3 tab.

L. J. M., “Performance evaluation of dynamic roughing filtration”, vol. no. 137. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. vi, 83 p.: 30 fig., 11 tab., 1994.

J. T. Visscher, E. R., Q., J. M., L., A. C., G., R. Munoz, D., V., C. H. Cruz, and G. C., G., “Proyecto integrado de investigacion y demostracion en filtracion lenta en arena : informe final, version resumida”. Centro Inter-Regional de Abastecimiento y Remocion de Agua, Cali, Colombia, p. 48 p.: fig., tab., 1989.