Prochorowicz, Jacek, and Robert Rusielik. “RELATIVE EFFICIENCY OF OILSEED CROPS PRODUCTION IN THE SELECTED FARMS IN EUROPE AND THE WORLD IN 2005”. Acta Scientiarum Polonorum. Oeconomia 6, no. 4 (December 30, 2007): 57-62. Accessed April 3, 2025. https://js.wne.sggw.pl/index.php/aspe/article/view/3751.