kbibo, Issa, Amjad badran, and Maha hleibieh. “Effect Inoculation Soil and Sweet Corn Seeds With Pseudomonas Fluorescens and Azospirillum Lipoferum on Solubilizing Some Forms of Fixed Phosphorus in Soil”. Tishreen University Journal -Biological Sciences Series 43, no. 4 (September 23, 2021). Accessed January 19, 2022. http://journal.tishreen.edu.sy/index.php/bioscnc/article/view/10933.