Krzysiak, Zbigniew. “Profitability of Sugar Beet Crop in 2018/2019 Campaign on the Example of Lubelskie Province”. Agricultural Engineering 24, no. 3 (September 30, 2020): 39-49. Accessed December 22, 2024. http://agriceng.ptir.org/index.php/AgricEng/article/view/250.