WOLTER, Edyta. Educational aspects of nature protection in the Second Polish Republic (1918-1939). Quarterly Journal Fides et Ratio, [S. l.], v. 46, n. 2, p. 459–479, 2021. DOI: 10.34766/fetr.v46i2.773. Disponível em: https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/773. Acesso em: 17 jul. 2025.