WOLAŃSKI, Napoleon; ROJAS, Armando; VALENTIN, Graciela; SINIARSKA, Anna. Each child and each of its features has a specific pace of development, modified by the living conditions in a given period. (Report 2 of a Biennial Monthly Survey in Yucatan, Mexico). Studia Ecologiae et Bioethicae, [S. l.], v. 2, n. 1, p. 47–74, 2004. DOI: 10.21697/seb.2004.2.1.02. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/6824. Acesso em: 6 dec. 2025.