Biblio

J. P. Canler, Perret, J. M., Duchene, P., and Cotteux, E., “Aide au diagnostic des stations d'épuration par l'observation microscopique des boues activés”. CEMAGREF Editions, Cahors, France, p. 155 p. : fig., tabs., 1999.

S. Sharma, “Nepalese biotic score and its use in water quality assessment”, Water resources journal, pp. p. 51-59 : 4 tab., 1999.

E. de Lange, Manual for simple water quality analysis. Amsterdam, The Netherlands: International Water Tribunal Foundation, 1994, p. ca. 140 p.: ill.

E. de Lange, Manual para el analisis simple de la calidad del agua. The Hague, The Netherlands: International Water Tribunal Foundation, 1994, p. ca. 150 p.: ill.

E. de Lange, Manual pour l'analyse simple de la qualite d'eau. Amsterdam, The Netherlands: International Water Tribunal Foundation, 1994, p. ca. 150 p.: ill.

E. A. R. Ouano, Principles of wastewater treatment. Vol. 1. Biological processes. Manila, Philippines: National Science Development Board, 1983, p. v, 314 p.: fig., tab.

American Water Works Association -Denver, CO, US, AWWA, Procedures simplifiees pour l'examination de l'eau. Rijswijk, The Netherlands: IRC, 1983, pp. 239 p. + p. S104-S143: fig., tab.

A. E. M. Khairy, O. Sebaie, E., A. Gawad, A., and L. Attar, E., “The sanitary condition of rural drinking water in a Nile Delta village. I. Parasitological assessment of 'zir' stored and direct tap water”, J. Hyg. , Camb., pp. p. 57-61 : 1 fig., 4 tab., 1982.

American Water Works Association -Denver, CO, US, AWWA, Simplified procedures for water examination, Rev.ed. (1975) + Supplement (1977)., vol. no. M12. Denver, CO, USA: American Water Works Association, 1978, pp. iv, 158 p. + Suppl. p. S101-S127.

W. E. Taylor, “Forty-fifth report on the result of the bacteriological, chemical and biological examination of the London waters for the years 1971-1973”, vol. no. 45. Metropolitan Water Board, London, UK, p. 188 p., 1974.