RUTKOWSKI, H. A few comments on the historical borders in Poland. Studia Geohistorica, [S. l.], n. 6, p. 124–135, 2019. DOI: 10.12775/SG.2018.09. Disponível em: https://apcz.umk.pl/AZMDDP/article/view/SG.2018.09. Acesso em: 25 kwi. 2024.