FESAL FESAL, N.; نبراس; YOUNS AL MURAD, nibras; نبأ. The effect of using the round robin in learn the art of performing some volleyball skills and developing the tendency towards physical education for secondary students. Al-Rafidain Journal For Sport Sciences (RJSS), [S. l.], v. 25, n. 78, p. 78–92, 2025. DOI: 10.33899/rjss.2022.175451. Disponível em: https://ojs.uomosul.edu.iq/index.php/rjss/article/view/11158. Acesso em: 4 aug. 2025.