كبيبو عيسى, الزعبي محمد, and أحمد سقراط. “The Effect of Biogas Slurry and Mineral Fertilizers on Growth Indicators and Productivity of Maize (Zea Mays L.)”. Tishreen University Journal -Biological Sciences Series 43, no. 4 (September 23, 2021). Accessed April 16, 2024. https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/10935.