DÍAZ MARTÍNEZ, Ximena. A comparative analysis of aptitud and physical activity according to the index of school vulnerability in students from Chillán, Chile. Praxis Educativa, [S. l.], v. 11, n. 11, p. 95–102, 2012. Disponível em: https://cerac.unlpam.edu.ar/index.php/praxis/article/view/467. Acesso em: 19 may. 2024.