John, Kingsley, and Ackley Ufot Akpan-Idiok. “Land Evaluation, Characterization and Classification of Soil for the Proposed Oil Palm Plantation in Ekpri Ibami, Akamkpa Local Government Area, Nigeria”. International Journal of Environment, Agriculture and Biotechnology, vol. 4, no. 3, Oct. 2019, https://journal-repository.com/index.php/ijeab/article/view/339.