J. E. Gould and Naidu, K. G.,
“Rainwater catchment : possibilities in urban and peri-urban Botswana”, in
Participation in rainwater collection for low income communities and sustainable development : proceedings of the sixth International Conference on Rainwater Catchment Systems, 1-6 August, 1993, 1994, pp. P. 117-128 : 3 fig., 3 tab.