Conservation, Ecology and Management of African Freshwaters BY THOMAS L. CRISMAN, LAUREN J. CHAPMAN, COLIN A. CHAPMAN AND LES S. KAUFMAN xxii + 514 pp., 52 figs, 22.5 15 2.4 cm, ISBN 0 8130 2600 8 paperback, US$ 34.95, Gainesville, USA: University Press of Florida, 2003