Aldeeb, Safaa, Ihab Abdallah, and Aber Mohmmad. “The Pollution of GroundWater With Nitrogen Fertilizers in Al-Mazraa/ Homs/ Syria”. Association of Arab Universities Journal of Engineering Sciences 27, no. 4 (December 31, 2020): 121-130. Accessed June 12, 2021. https://jaaru.org/index.php/auisseng/article/view/450.