“Effect of Saline Water and Potassium Fertilizer on Nitrogen Fixation in Pisum Sativum L”. Baghdad Science Journal 5, no. 1 (March 2, 2008): 19–26. Accessed June 19, 2025. https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/857.