Biblio

R. E. Jackson, Aquifer contamination and protection, vol. no. 30. Paris, France: UNESCO, 1980, p. 440 p.: fig., tab.

S. S. D. Foster, Lewis, W. J., and Farr, J. L., “The pollution hazard to village water supplies in eastern Botswana”, Proceedings of the Institution of Civil Engineers, 1980.

E. Tempia, “Health effects of water quality : a case study”. Organisation d'Etude d'Amenagement de l'Aire, Lille, France, p. 33 p.: fig., 1978.

WHO. Regional Office for Europe -Copenhagen, DK, EURO, “Health hazards from drinking-water : report on a working group, London 26-30 September 1977”. World Health Organization Regional Office for Europe, Copenhagen, Denmark, p. 13 p., 1978.

Lyndon B. Johnson School of Public Affairs -Austin, TX, US, Impact of the federal Safe Drinking Water Act on Texas : a report, vol. no. 21. Austin, TX, USA: University of Texas, 1978, p. xv, 189 p.

H. I. Shuval and Gruener, N., “Health effects of nitrates in water”. US Environmental Protection Agency (EPA), Cincinnati, OH, USA, p. xii, 149 p., 1977.

W. R. A. - Water Re 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.