Biblio

B. Gumbo, Jonker, L., Robinson, P., and van der Zaag, P., “Post-graduate training module on water demand management”. World Conservation Union (IUCN), Pretoria, South Africa, p. 90 p. : fig., photogr., tab. , 2003.

J. Lane and Robinson, P., “Upgraded Family Wells in Zimbabwe : household-level water supplies for multiple uses”, vol. no. 7. World Bank, Nairobi, Kenya, p. 7 p. : photogr., 2002.