“DIVERSIFICATION OF DEVELOPMENT DEMOGRAPHIC CONDITIONS IN KOSZALIN AND OTHER SELECTED TOWNS”, zeszyty, vol. 1, no. 21, pp. 115–133, Jan. 2018, Accessed: Jul. 20, 2025. [Online]. Available: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/93