Are, K. S., Adelana, A. O., Fademi, I. O., & Aina, O. A. (2017). Improving physical properties of degraded soil: Potential of poultry manure and biochar. Agriculture and Natural Resources, 51(6), 454–462. Retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/239453