Walt, B.J. van der

van der Walt, B.J. & Heinsohn, R.D., 1997. DWAF/CWSS evaluation : community impact and management assessment : approach and methodology, Pretoria, South Africa: South Africa, Department of Water Affairs and Forestry. Available at: https://nl.ircwash.org/sites/default/files/824-ZA-15246.pdf.