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Water treatment

Huisman, L. (1989) Plain

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Lambert, S.D. and Graham, N.J.D. (1995) A comparative Evaluation of the Effectiveness of Potable Water Filtration Processes. Journal Water SRT-Aqua, v. 144, 1, pp. 38-51 Latorre, J. (1994) Performance Evaluation of Dynamic Roughing Filtration: M.Sc Thesis. IHE, Delft. Latorre, J. and Manzoor, H. (1995) Research Work on Community Water Treatment, Northern Pakistan. Cali, Colombia. Travel Report. First consultancy, Latorre, J. and Manzoor, H. (1996) Research Work on Community Water Treatment, Northern Pakistan. Cali, Colombia. Travel Report. Second consultancy, Lebcir, R. (1992) Factor Controlling the Performance of Horizontal Flow Roughing Filters. The University of the Newcastle, Department of the Civil Engineering, Environmental Engineering Division. Leland, D.E. and Logsdon, G.S. (1991) Pilot Plants for Slow Sand Filters: In Slow Sand Filtration, ed. by GS Longsdon; ASCE: New York, pp. 191-227 Letterman, R.D. (1991) Operation and Maintenance: In Slow Sand Filtration, ed. by GS Longsdon; ASCE: New York, USA. pp. 149-164 Letterman, R.D. and Cullen, T.R. (1985) Slow Sand Filter Maintenance: Costs and Effects on Water Quality. EPA-600/2-85/056, U.S. Environmental Protection Agency, Cincinnati, Ohio. USA. Lloyd, B. (1974) Functional Microbial Ecology of Slow Sand Filters: PhD Thesis. University of Surrey. United Kingdom. Lloyd, B. (1996) The Significance of Protozoal Predation and Adsorption for the Removal of Bacteria by Slow Sand Filtration: In Advances in Slow Sand and Alternative Biological Filtration, ed. by NJD Graham and Collins, M.R. John Wiley and Sons: England, pp. 129-138 Lloyd, B. and Helmer, R. (1991) Surveillance of Drinking Water Quality in Rural Areas: Longman Scientific&technical, Essex, England, pp. 1-171 Lloyd, B., Pardon, M., and Wheeler, D. (1986) The Development, Evaluation and Field Trials of a Small Scale, Multi-Stage, Modular Filtration System for the Treatment of Rural Water Supplies. U.K. Overseas Development Administration. Final Report. Research Proj. R3760, Lloyd, B., Pardon, M., and Bartram, J. (1987) The Development and Evaluation of a Water Surveillance and Improvement Programme for Peru. Paper present at the American Society of Civil Engineers International Conference on Resource Mobilisation for Drinking Water Supply in Developing Nations. San Juan, Puerto Rico. ASCE. Lloyd B., Pardon, M., Wheeler, D. (1988) The Performance and Evaluation of Slow Sand Filters in Peru. In Slow Sand Filtration, ed. by NJD Graham; Ellis Horwood Ltd. England, pp. 393-411 Lloyd, B., Galvis, G., and Eudovique, R. (1991) Evaluation of Multiple Barrier Drinking Water Treatment systems for Surface Water Sources: In The Environment and Water Sector Development. Proceedings of the 20th caribbean Water Engineers' Conference held in Grand Cayman, Cayman Islands, British West indies, 4-6 December 1991, ed. by RGB Beswick and Frederick, G.L. Cayman Free Press: Gran Cayman, pp. 103-114 Logsdon, G.S. (1987) Comparison of Some Processes Appropriate for Giardia Cyst Removal. USEPA. Ohio, USA. Marin, R. (1995) Definiciones sobre el Agua Potable y Saneamiento Básico: ACODAL, v. 166, pp. 12- 21 Mc Conell, L.J. (1984) Evaluation of the Slow Rate Sand Filtration Process for Treatment of Drinking Water Containing Viruses and Bacteria: M.Sc. Thesis. Utah State University, Logan, Utah. MDF, (1992) Sustainability of Projects: MDF, Management for Development Foundation. Ede, The Netherlands. 222