Bakir Mohammed, Zahraa, and زهراء. 2025. “Comparative Anatomical Study of Leaves Epidermis for Centaurea Benedicta L. And Carduus Pycnocephalus L. (Asteraceae) in Tikrit City/ Iraq”. Rafidain Journal of Science 32 (4):1-7. https://doi.org/10.33899/rjs.2023.181271.