@article{Ziętara_Zieliński_2019, title={COMPETITIVENESS OF POLISH AND GERMAN FARMS SPECIALIZED IN FIELD CROPS}, volume={53}, url={http://www1.up.poznan.pl/jard/index.php/jard/article/view/1261}, DOI={10.17306/J.JARD.2019.01261}, number={3}, journal={Journal of Agribusiness and Rural Development}, author={Ziętara, Wojciech and Zieliński, Marek}, year={2019}, month={Oct.}, pages={281–290}