Biblio

N. L. S. A. W. A. - Ede and Tamale, G. H. Archdioces, “Water supply by dam construction on village scale : the experience of the Village Water Reservoir Project in the Northern Region of Ghana”. SAWA, Ede, The Netherlands, p. 19 p.: 1 fig., 9 boxes, 1994.

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.

M. Boller, “Filter mechanisms in roughing filters”, Aqua : journal of water supply research and technology, pp. p. 174-185: 17 fig., 1 tab., 1993.

L. Rietveld and Matsinhe, N., Pilot plant studies on slow-sand-filtration and up-flow-roughing-filtration in Mozambique, vol. no. 44. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1993, p. v, 46 p. : fig., tab.

J. T. Visscher, Beron, F., G. C., G., and Fernandez, J., “Pre-treatment alternatives for drinking water supply systems : selection, design, operation and maintenance”, vol. no. 22. IRC, The Hague, The Netherlands, p. viii, 101 p.: 40 fig., 19 tab., 1993.

M. Wegelin and Schertenleib, R., “Roughing filters for water treatment”, IRCWD news, pp. p. 1-8: 7 fig., 1993.

G. S. Logsdon, Neden, D. G., Ferguson, A. M. D., and LaBonde, S. D., “Testing direct filtration for the treatment of high-turbidity water”, Journal American Water Works Association, pp. p. 39-46: 7 fig., 6 tab., photogr., 1993.

M. Wegelin and Dorcoo, K., “Water treatment in northern Ghana”, in Water, sanitation, environment and development : proceedings of the 19th WEDC conference, Accra, Ghana, 6-10 September 1993, 1993, pp. P. 111-114 : 2 fig., 1 tab.

B. J. Lloyd, Visscher, J. T., and G. C., G., “Multi-stage surface water treatment for community water supply in Colombia”, Waterlines, an international journal of water, sanitation and waste, pp. p. 26-29 : 3 fig., 3 tab., photogr., 1992.

C. O. C. I. N. A. R. A. - Cali and IRC International Water and Sanitation Centre, The Hague, NL, “Proyecto integrado de investigacion y demostracion de metodos de pretratemiento para sistemas de abastecimiento de agua : informe final : desarrollo, logros y perspectivas”. IRC, The Hague, The Netherlands, p. xxix, 233 p.: 52 fig., 47 tab., 1992.

C. H. Internatio Duebendorf, “Roughing filters for water treatment : workshop in Zurich / Switzerland, 25-27 June 1992 = Kiesfiltration in der Wasseraufbereitung : Arbeitstagung in Zuerich / Schweiz, 25 -27 Juni 1992”. International Reference Centre for Waste Disposal, Duebendorf, Switzerland, p. ca. 250 p. : fig., tab., 1992.

M. Wegelin, Schertenleib, R., and Boller, M., “The decade of roughing filters : development of a rural water-treatment process for developing countries”, Aqua : journal of water supply research and technology, pp. p. 304-316: 17 fig., 2 tab., 1991.

G. J. Alaerts, Buiteman, J. P., and Ahsan, T., “Direct horizontal-flow roughing filtration : an improved pretreatment process for highly turbid water”. p. 14 p. : tab., fig., 1991.

M. R. Collins, Eighmy, T. T., and Malley, J. P., “Evaluating modifications to slow sand filters”, Journal American Water Works Association, pp. p. 62-70: 7 fig., 5 tab., photogr., 1991.

M. J. D. Graham and Clarke, B. A., “Evaluation of fabric enhanced reduced depth slow sand filters : research scheme R4648 : [progress report]”. University of Surrey, Department of Civil Engineering, Guildford, UK, p. 25 p.: 17 fig., ill., 1991.

B. A. Janonis, Logsdon, G. S., Collins, M. R., Barrett, J. M., Bryck, J. M. G., and Hendricks, D., Manual of design for slow sand filtration. Denver, CO, USA: American Water Works Association, 1991, p. xxxv, 247 p.: fig., tab.

C. O. C. I. N. A. R. A. - Cali and IRC International Water and Sanitation Centre, The Hague, NL, “Seminario internacional sobre mejoramiento de la calidad de agua para consumo humano : Noviembre 4 al 8 de 1991, Cali, Colombia”. Centro Inter-Regional de Abastecimiento y Remocion de Agua, Cali, Colombia, p. ca. 450 p.: fig., tab., 1991.

T. H. Provincial Bangkok, Cali, C. O. C. I. N. A. R. A. -, IRC International Water and Sanitation Centre, The Hague, NL, and National Environmental Engineering Research Institute -Nagpur, IN, NEERI, “Technology transfer in the SSF project : report of an International Evaluation Workshop, The Hague 2-4 September 1991”. IRC, The Hague, The Netherlands, p. ii, 24 p.: 1 fig., 3 tab., 1991.

C. O. C. I. N. A. R. A. - Cali, “Evaluacion de sistemas de abastecimiento de agua con plantas de tratamiento administrado por comunidades : informe final”. Centro Inter-Regional de Abastecimiento y Remocion de Agua, Cali, Colombia, p. 3 vol. (ca. 470 p.): fig., tab., 1990.

J. G. Janssens, Verstraete, W., Liessens, J., and Vochten, P., “Polyurethane prefilters to improve slow sand filtration”, Water supply : the review journal of the International Water Supply Association, pp. p. 130-142: fig., tab., 1990.

K. J. Ives and Rajapakse, J. P., “Pre-filtration of very highly turbid waters using pebble matrix filtration”, Journal of Institution of Water and Environmental Management, pp. p. 140-147: fig., tab., 1990.

J. E. M. Smet, “Report on problems in operation and performance of new slow sand filters of REGIDESO, Bujumbura, Burundi”. IRC, The Hague, The Netherlands, p. 7 p. + appendices (ca. 70 p.): drwngs., 1990.

IRC International Water and Sanitation Centre, The Hague, NL and National Environmental Engineering Research Institute -Nagpur, IN, NEERI, “Research and demonstration project on slow sand filtration (phase IV) : inventory of slow sand filters in India”. National Environmental Engineering Research Institute, NEERI, Nagpur, India, p. ca. 60 p.: tab., 1990.

T. S. A. Mbwette and Wegelin, M., “Design, operation and maintenance considerations of horizontal flow roughing filters”, Waterlines, an international journal of water, sanitation and waste, pp. p. 27-29: fig., photogr., tab., 1989.

WHO. Regional Office for Europe -Copenhagen, DK, EURO and Swindon, G. B. Water Rese, Disinfection of rural and small-community water supplies : a manual for design and operation. Medmenham, UK: Water Research Centre, 1989, p. 135 p.: fig., tab.