[1]
E. . Wolter, “Education for environmental protection on the foundation of the value of truth, kindness, beauty and ecological values”, FetR, vol. 36, no. 4, pp. 238–252, Dec. 2018, Accessed: Nov. 04, 2025. [Online]. Available: https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/490