كبيبو عيسى, بدران أمجد, and حليبيه مها. 2021. “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 (4). https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/10933.