[1]
“DIVERSIFYING THE LEVEL OF SUSTAINABLE DEVELOPMENT IN POLAND AND SELECTED COUNTRIES OF THE EUROPEAN UNION”, zeszyty, vol. 1, no. 23, pp. 139–158, Dec. 2019, Accessed: Jul. 19, 2025. [Online]. Available: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/148