Biblio

M. J. D. Graham and Collins, M. R., “Slow sand filtration : an international compilation of recent scientific and operational developments”. American Water Works Association, Denver, CO, USA, p. xi, 322 p.: fig., tab., 1994.

B. A. Janonis, Logsdon, G. S., Collins, M. R., Barrett, J. M., Bryck, J. M. G., and Hendricks, D., Manual of design for slow sand filtration. Denver, CO, USA: American Water Works Association, 1991, p. xxxv, 247 p.: fig., tab.