SANDNER, J. Environmental protection concept in holistic nature studies education. Studia Ecologiae et Bioethicae, [S. l.], v. 4, n. 1, p. 377–383, 2006. DOI: 10.21697/seb.2006.4.1.28. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7708. Acesso em: 22 nov. 2024.