@ARTICLE {HULUGALLE:1993, title = {Contributory factors to soil spatial variability in an Ultisol. ll. Retention of living trees in situ following land clearing}, author = {Hulugalle, N. and Ndi, J. }, journal = {Communications in Soil Science and Plant Analysis}, year = {1993}, volume = {24}, number = {11 & 12}, pages = {1409--1419}, }