PRZYWĘDA, R. Changes in physical fitness of Polish youth during the last three decades . Studia Ecologiae et Bioethicae, [S. l.], v. 7, n. 1, p. 57–71, 2009. DOI: 10.21697/seb.2009.7.1.04. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7241. Acesso em: 5 jul. 2024.