Al-Khafagy, Aseel M., and Kazem Deli Al-Jubouri. “INFLUENCE OF FERTILIZERS AND ORGANIC NUTRIENTS ON GROWTH AND SEED YIELD OF ONION ”. Diyala Agricultural Sciences Journal , vol. 2, no. 2, Dec. 2010, pp. 64-83, https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3123.