Dej, Magdalena, and Piotr Trzepacz. “Entrepreneurship of Inhabitants Vs. Economic Activity of Large and Medium Enterprises in Rural Areas of Selected Historical Regions of Poland”. Bulletin of Geography. Socio-economic Series, no. 11 (October 6, 2009): 89–104. Accessed January 31, 2023. https://apcz.umk.pl/BGSS/article/view/v10089-008-0022-6.