Soil organic matter dynamics and sustainability of tropical agriculture: K. Mulongoy and R. Merckx (Editor). Proceedings of an international symposium organized by the Laboratory of Soil Fertility and Soil Biology, Katokiecke Universiteit Leuven (K.U. Leuven) and the International Institute of Tropical Agriculture (IITA), held on 4–6 November 1991 in Leuven, Belgium. John Wiley and Sons, K.U., (a co-publication with Sayce Publishing (UK), K.U. Leuven (Belgium) and IITA (Nigeria), 1993, 416 pp, £49.95 (US$79.95), ISBN D-471-939215-3