ISBN Print: 1-56700-002-9
DOI: 10.1615/1-56700-002-9.70 pages 57-63
S.D. Lynch Department of Agricultural Engineering University of Natal, P.O. Box 375 Pietermaritzburg, 3200 Republic of South Africa
M.C. Dent Computing Centre for Water Research University of Natal, P.O. Box 375 Pietermaritzburg, 3200 Republic of South Africa
R.E. Schulze Department of Agricultural Engineering University of Natal, P.O. Box 375 Pietermaritzburg, 3200 Republic of South Africa