Tajanowskij, Georgij, Wojciech Tanaś, and Mariusz Szymanek. “On Changes in Concept and General Composition of Agricultural Tractors”. Agricultural Engineering 23, no. 2 (June 1, 2019): 69-84. Accessed December 5, 2022. https://agriceng.ptir.org/index.php/AgricEng/article/view/186.