1.
Zayer Qasim M. Availabilityof the level of international quality standards in mathematics textbooks for 6th grade students (A comparative study of mathematics textbooks for 6th grade students. UJHSS [Internet]. 5Dec.2018 [cited 19Nov.2019];(227 (3):245-66. Available from: http://alustath.uobaghdad.edu.iq/index.php/UJIRCO/article/view/782