Groundwater exploration and development in crystalline basement aquifers / Proceedings of the workshop held in Harare, Zimbabwe 15-24 June, 1987 - London: Commonwealth Science Council, 1989 - v, 402p. - Series no. CSC(89)WMR-13 technical paper 273 . Vol. 1 Subjects--Topical Terms: Proceedings Universal Decimal Class. No.: 556.3(082.2) / M9