OKORO, S.P.A., AIGHEWI, I.T. and OSAGIE, C.O. (2013) “Effect of selected monoculture plantation species on the humid tropical soils of southern Nigeria”, The Indian Journal of Agricultural Sciences, 70(2). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/28043 (Accessed: 28 October 2025).