SEVER, M. O. THE EFFECT OF 9-12 YEARS OLD SWIMMERS ON 50 M FREE TECHNICAL PERFORMANCE BEFORE AND AFTER COVID-19. Journal of ROL Sport Sciences, [S. l.], v. 2, n. 1, p. 96–104, 2021. DOI: 10.29228/roljournal.48700. Disponível em: https://roljournal.com/index.php/rol/article/view/18. Acesso em: 23 nov. 2024.