Biblio

D. Fogel, Isaac-Renton, J., Guasparini, R., Moorehead, W., and Ongerth, J., “Removing Giardia and Cryptosporidium by slow sand filtration”, Journal American Water Works Association, pp. p. 77-84: 7 tab., photogr., 1993.

J. M. G. Bryck, Walker, B. W., and Hendricks, D., “Slow sand filtration at 100 Mile House, British Columbia, Canada”. S.n., S.l., pp. P. 211-220 : 4 tab, 1988.

B. Walker and Bryck, J. M. G., “Waterborne giardiasis-treatment process selection : presented at American Society of Civil Engineers 1984 National Conference on Environmental Engineering, Los Angeles, California, June 25-27, 1984”, presented at the 1984-01-01, New York, NY, USA, 1984, p. 31 p.: drwgs., graf., tab.