Biblio

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.

B. J. Lloyd, Visscher, J. T., and G. C., G., “Overcoming water quality limitations with the multi-barrier concept : a case study from Colombia”, in Slow sand filtration : an international compilation of recent scientific and operational developments, 1994, pp. P. 47-60: fig., 3 tab.

J. T. Visscher, G. C., G., and Fernandez, J., “Comparative study of different pre-treatment alternatives”, Aqua : journal of water supply research and technology, pp. p. 337-346: 7 fig., 5 tab., 1993.