M. Omar, Omar, Ammar Z. Kassab-Bashi, and Nathim Th. Saieed. “Micropropagation of Black Poplar Trees ( Populus Nigra L. ) by Tissue Culture”. Rafidain Journal of Science 24, no. 12 (December 1, 2013): 1–17. Accessed September 15, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/47526.