“CREATING OF SUSTAINABLE RURAL AREAS DEVELOPMENT BASED ON THE AGRICULTURAL BIOGAS PLANTS” (2021) Research Bulletins of the Faculty of Economic Sciences, 1(18), pp. 11–23. Available at: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/176 (Accessed: 20 July 2025).