“STATE AND CHANGES OF INFRASTRUCTURE LEVEL IN RURAL AND URBAN-RURAL COMMUNES OF THE WEST POMERANIAN VOIVODESHIP”. Research Bulletins of the Faculty of Economic Sciences, vol. 1, no. 23, Dec. 2019, pp. 9-24, https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/150.