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Schippers, J.C., Kruithof, J.C., and Dijk, J.C. van, Abastecimiento de agua potable de agua superficial en los anos noventa, vol. no. 43. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1992, p. iii, 20 p. : 26 fig.
Montiel, A. and Welte, B., Desinfection de l'eau : importance de la turbidite. Societe Anonyme de Gestion des Eaux de Paris, Paris, France, p. 9, 14 p.: fig., tab., 1988.
Hackett, G. and Lehr, J.H., Iron bacteria occurrence, problems and control methods in water wells. Worthington, OH, USA: National Water Well Association, 1985, p. iv, 79 p.: fig., tab.
EPA -Cincinnati, OH, US and EPA -Washington, DC, US, Process design manual : wastewater treatment facilities for sewered small communities. Cincinnati, OH, USA: US Environmental Protection Agency (EPA), 1977, p. xv, 477 p.: fig., tab.
W.R.A. - Water Research Association, Nitrate removal during storage; a review of possible mechanisms and a summary of observed changes, vol. ILR no. 274. W.R.A. - Water Research Association, Medmenham, UK, p. 22 p. : 1 tab., 5 fig., 1973.