MUSTAFA, Ibrahim M. 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 UNIVERSITY JOURNAL OF HUMANITIES AND SOCIAL SCIENCES, [S. l.], v. 2, n. 2, p. 117–121, 2019. DOI: 10.14500/kujhss.v2n2y2019.pp117-121. Disponível em: https://jhss.koyauniversity.org/index.php/jhss/article/view/132. Acesso em: 19 may. 2025.