SOLIHA, B. IMPROVING THE METHODOLOGY FOR DEVELOPING THE PHYSICAL QUALITIES OF 14–15-YEAR-OLD VOLLEYBALL PLAYERS. Research Focus International Scientific Journal, [S. l.], v. 5, n. 5, p. 82–85, 2026. Disponível em: https://refocus.uz/index.php/rf/article/view/2253. Acesso em: 13 jun. 2026.