Ali, M., M. S. Sarir, M. U. Shirazi, S. M. Alama, and R. U. Ansari. “?PHOSPHORUS ADSORPTION IN REPRESENTATIVE SOILS OF PESHAWAR VALLEY (NWFP)”. Biological Sciences - PJSIR, vol. 46, no. 4, Aug. 2003, pp. 288-94, https://v2.pjsir.org/index.php/biological-sciences/article/view/1652.