“Effect of Ethephon, Boron and Zinc Spray on Anatomical Characters of Sunflower Crop (Helianthus annuus L.)”, Iraqi Journal of Science, vol. 54, no. 4Appendix, pp. 1078–1083, Jan. 2024, Accessed: May 10, 2024. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12425