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• Hofkes, EH. (ed), 1983. Small Community Water Supplies: Technology of Small
Water Supply Systems in Developing Countries, International Reference Centre for
Community Water Supply and Sanitation and John Wiley and Sons, Chichester,
442 p. (The book is available at the Life Sciences Library, University of Natal,
Pietermaritzburg).
• Kirchner, J.O.G., 1995. Investigation into the contribution of ground water to the
salt load of the Breede River, using natural isotopes and chemical tracers, WRC
Report No. 344/1/95, Water Research Commission, Pretoria, 335 p. (The report
is a useful case study).
• Kirchner, J. and Van Tonder, G.J., 1995. Proposed guidelines for the execution,
evaluation and interpretation of pumping tests in fractured-rock formations, Water
SA. VOl 21(3), p. 187 - 200.
• Kirchner, J., Van Tonder, G.J. and lukas, E, 1991. Exploitation potential of Karoo
aquifers, WRC Report No. 170/1/91, Water Research Commission, Pretoria, 283 p.
• Kirchner, J., Van Tonder, G.J. and Lukas, E, 1991. Exploitation potential of Karoo
aquifers: appendix, WRC Report No. 170/2/91, Water Research Commission,
Pretoria, 244 p.
• lynch, S.D., Reynders, A.G. and Schulze, R.E., ·1994. Preparing input data for a
national-scale groundwater vulnerability map of southern Africa, Water SA,
VOl 20(31, p. 239 - 246.
• Meyer, R. and Coetsee, V. d A., 1991. Die toepassing van geoelektriese metodes
vir die bepaling van geohidrologiese veranderlikes, WRC Report No. 216/1/91,
Water Research Commission, Pretoria, 55 p. + app.
• Paling, W.A.J. and Stephenson, D., 1993. Effects of urbanization on catchment
water balance, 3. Geohydrology of catchments, WRC Report No. 183/3/93, Water
Research Commission, Pretoria, 155 p.