SEVER, Mehmet Onur. “THE EFFECT OF 9-12 YEARS OLD SWIMMERS ON 50 M FREE TECHNICAL PERFORMANCE BEFORE AND AFTER COVID-19”. Journal of ROL Sport Sciences 2, no. 1 (January 15, 2021): 96–104. Accessed November 27, 2024. https://roljournal.com/index.php/rol/article/view/18.