Abdul satar A, Abd Al wahid A. The Effect Of Special Exercises for Attention Concentration on Learning Overhead pass in volleyball for sophomore students of physical Education & Sport Sciences College. jope [Internet]. 2019 Sep. 28 [cited 2026 Jun. 29];31(3):19-28. Available from: https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/855