Kaliński, Janusz. 2018. “Transformations of the Spatial Structure of Peasant Farms in Poland After 1918​ ”. Kwartalnik Kolegium Ekonomiczno-Społecznego. Studia I Prace, no. 3 (35) (July):121-43. https://econjournals.sgh.waw.pl/kwes/article/view/1114.