Obafemi Olutola Olubanjo, & Samuel Oluwamayowa Ayoola. (2019). Assessment of Spatial Variability of Physico Chemical Properties of Soil at Crop, Soil and Pest Management Research. Global Journal of Science Frontier Research, 19(D1), 57–76. Retrieved from https://journalofscience.org/index.php/GJSFR/article/view/2497