River basin management for sustainable development : proceedings of the 7th International symposium on River Basin management,held in Kruger National Park,South Africa,15-17 May,1995 - International River Basin Management Symposium,Water Institute of South Africa(WISA),International Association on Water Quality(IAWQ)(7th:1995:South Africa) . ( ) (South Africa : Pergamon Press, 1995)
NULL
Keywords: RIVER BASIN