Shahatha , Waleed Khalid. “ROLE OF NANO ZINC IN IMPROVING PRODUCTIVITY OF OIL CROPS: A REVIEW ”. Diyala Agricultural Sciences Journal 12, no. 1 (June 30, 2020): 24–34. Accessed May 4, 2024. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/1025.