Nabeel Rizwan, and Qudrat Ullah Khan, trans. “Comparison of Adsorption Models for Determining Potassium Behavior of Some Selected Soil Series”. Pakistan Journal of Analytical & Environmental Chemistry 22, no. 1 (June 30, 2021): 74–83. Accessed November 5, 2025. https://pjaec.pk/index.php/pjaec/article/view/71.