@misc{Institute_of_History_of_the_Polish_Academy_of_Sciences_Wkra., author={Institute of History of the Polish Academy of Sciences}, copyright={Rights Reserved - Free Access}, journal={Files of the Historico-Geografical Dictionary of Masovia in the Middle Ages}, howpublished={online}, language={lat ; pol}, title={Wkra. Files of Niedzborz district in the Middle Ages. Files of Historico-Geographical Dictionary of Masovia in the Middle Ages}, title={Wkra}, type={Text}, URL={http://rcin.org.pl/Content/30770/PDF/WA303_49500_NDZ_Wkra.pdf}, keywords={Masovia (Poland ; region) - geography [KABA], Masovia, Middle Ages, settlement, Niedzborz district, Sulerzyz district}, }