White, R.D.

McGowan, R., White, R.D. & Hodgkin, J., 1987. Small-scale water pumping in Botswana. Vol. 1. Comparisons, (Wash field report no. 235) Arlington, VA, USA: Water and Sanitation for Health Project (WASH). Available at: https://fr.ircwash.org/sites/default/files/824-3830.pdf.