GRAD, R. PHYSICAL ACTIVITY AND LEISURE TIME AMONG 13-15-YEAR-OLD TEENAGERS LIVING IN BIAŁA PODLASKA. Physical Education of Students, [S. l.], v. 17, n. 2, p. 74–79, 2013. DOI: 10.6084/m9.figshare.156385. Disponível em: https://sportedu.org.ua/index.php/PES/article/view/312. Acesso em: 21 aug. 2026.