SETYAWAN, Hendra et al. Article RETRACTED due to manipulation by the authors The Effect Of Implementing Physical Education Class Management Archery Material To Improve Concentration Elementary School Students: Article RETRACTED due to manipulation by the authors. Retos, [S. l.], v. 56, p. 879–886, 2024. DOI: 10.47197/retos.v56.105216. Disponível em: https://revistaretos.org/index.php/retos/article/view/105216. Acesso em: 9 nov. 2026.