@INBOOK {KANG:1993,
title = {Changes in soil chemical properties and crop performance with continuous cropping on an Entisol in the humid tropics},
author = {Kang, B. },
editor = {Mulongoy, K. and Merckx, R. },
year = {1993},
type = {Soil organic matter dynamics and sustainability of tropical agriculture},
pages = {297--305},
publisher = {John Wiley & Sons with Sayce Publishing (UK), Catholic University of Leuven (Belgium), IITA, Ibadan},
address = {Ibadan, Nigeria},
}