Łobos, Krzysztof, and Mirosława Szewczyk. “A Comparative Study of the Economic Effectiveness of Polish Manufacturers of Mushroom Compost”. Journal of Agribusiness and Rural Development 25, no. 3 (December 31, 2012): 147-157. Accessed May 5, 2024. http://www1.up.poznan.pl/jard/index.php/jard/article/view/557.