Gorkum, W.F.E. van

Ankersmit, W. & van Gorkum, W.F.E., 1991. Evaluation of phase 1 of the rehabilitation of the Calueque-Olushandja Regional State Water Scheme Namibia, Windhoek, Namibia: Namibia, Department of Water Affairs. Available at: https://fr.ircwash.org/sites/default/files/824-NAOW91-9999.pdf.