Boke, S. ., Beyene, S. ., & Gebrekidan, H. . (2016). Soil Phosphorus Fractions as Influenced by Different Cropping Systems: Direct and Indirect Effects of Soil properties on Different P Pools of Nitisols of Wolayta, Ethiopia. Asia Pacific Journal of Energy and Environment, 3(1), 17-24. https://doi.org/10.18034/apjee.v3i1.227