Hisham majeed shlash 2023. Acomparative Anatomical Study of the Species Aster subulatus and Aster tripolium (Asteraceae) inTikrit- Iraq. Tikrit Journal of Pure Science. 21, 4 (Feb. 2023), 30–35. DOI:https://doi.org/10.25130/tjps.v21i4.1049.