“Changes In The Level Of Socio – Economic Development In Middle Pomerania Compared To Communities Of Neighboring Voivodeships”, zeszyty, vol. 2, no. 20, pp. 77–90, Feb. 2017, Accessed: Jul. 19, 2025. [Online]. Available: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/38