AFTANASIUK, M. Physical fitness of urban and rural schoolchildren from low social strata in Yucatan, Mexico. Studia Ecologiae et Bioethicae, [S. l.], v. 1, n. 1, p. 127–140, 2003. DOI: 10.21697/seb.2003.1.1.08. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/6796. Acesso em: 16 jul. 2024.