Mohammed khaleel Alhilaly A, Mohammad Abdullah Al-Sharuk N. Designing two tests to measure the skills of the front and back loop hitting for tennis players. BERJ [Internet]. 2021 Jul. 1 [cited 2025 Oct. 26];17(2):1313-38. Available from: https://moss.uomosul.edu.iq/index.php/berj/article/view/38907