Madurowicz-Urbańska, Helena. “Research into the Agricultural Regions of Poland in the Period from the 16th to the 19th Century”. Studia Historiae Oeconomicae 7, no. 1 (October 18, 1973): 91–98. Accessed October 20, 2026. https://pressto.amu.edu.pl/index.php/sho/article/view/57585.