Akpan, U., I.D., U., & N. A., N. (2019). Application of Regression Tree in Modelling and Mapping of Cation Exchange Capacity of Soils in Akwa Ibom State, Nigeria. International Journal For Research In Agricultural And Food Science, 5(8), 71–92. Retrieved from https://gnpublication.org/index.php/afs/article/view/960