م. تغريد خضير هذال. Mathematical logic and its relationship to achievement and mathematical proof in topology among students of the College of Basic Education. cbej [Internet]. 2022 Jun. 25 [cited 2024 May 19];28(115):377-94. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/5821