Onweremadu, E. ., Aririguzo, B., Okoli, N., & Afangide, I. . (2021). Temporal Variability of Soil Reaction Among Surface and Near-Surface Horizons of Soils of Dissimilar Lithology in a Humid Tropical Environment. International Journal of Environment, 10(1), 99–111. https://doi.org/10.3126/ije.v10i1.38532