Boke, S. .; Beyene, S. .; Gebrekidan, H. . 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 Pac. j. energy environ. 2016, 3 (1), 17-24. https://doi.org/10.18034/apjee.v3i1.227.