Orzeszek, Piotr, and Maja Jerzak. “The Specificity of Research Methods in Environmental Protection”. Studia Ecologiae et Bioethicae 9, no. 3 (September 30, 2011): 9–19. Accessed November 25, 2024. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/3095.