Biblio

J. E. M. Smet, “Consultancy on small scale water treatment systems in UNICEF's Integrated Area-based Programme in Uukwaludhi, Namibia : final report”. IRC, The Hague, The Netherlands, p. 47 p. + 62 p. annexes : 2 tab., 20 fig., 1993.

J. E. M. Smet and Visscher, J. T., “Pre-treatment methods for community water supply : an overview of techniques and present experience”. IRC, The Hague, The Netherlands, p. 174 p.: fig., tab., 1989.