Parlak, Mirosława. “Ecological Knowledge and Awareness of Parents and Their Children in Primary schools’ Third Classes”. Studia Ecologiae et Bioethicae 14, no. 4 (December 31, 2016): 49–79. Accessed May 7, 2024. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/6261.