GRÜM, L. Ecology: Changing options. Studia Ecologiae et Bioethicae, [S. l.], v. 1, n. 1, p. 213–222, 2003. DOI: 10.21697/seb.2003.1.1.14. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/6802. Acesso em: 25 nov. 2024.