Czyżewski, Andrzej, and Łukasz Kryszak. “Agricultural Income and Prices. The Interdependence of Selected Phenomena in Poland Compared to EU-15 Member States”. Managerial Economics 18, no. 1 (September 28, 2017): 47. Accessed December 22, 2024. https://journals.agh.edu.pl/manage/article/view/2660.