م.م محمد عبد الحسين مجلي م.م محمد عبد الحسين مجلي 2026. The effect of exercises using a blended training method (skill-tactical) on developing the skills of covering and marking in football players under 17 years of age   . Wasit Journal of Sports Sciences. 28, 2 (Jun. 2026), 243–453. DOI:https://doi.org/10.31185/wjoss.1184.