Mustafa IM. Effect of The Percentage of The Contribution of Some Factors in The Implementation of The Lesson of Physical Education: For middle schools in Erbil Governorate. KOYA UNIV J HUM SOC SCI [Internet]. 2019Dec.29 [cited 2024Nov.22];2(2):117-21. Available from: https://jhss.koyauniversity.org/index.php/jhss/article/view/132