Working Paper
Conceptual overview of the Olifants River Basin's groundwater, South Africa. Occasional paper
Aston, J. J. 2000. Conceptual overview of the Olifants River Basin's groundwater, South Africa. Occasional paper. Colombo, Sri Lanka: International Water Management Institute (IWMI); Lynwood, South Africa: University of Pretoria, African Water Issues Research Unit (AWIRU). 17p.