@misc{Institute_of_History_of_the_Polish_Academy_of_Sciences_Jackowo, 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={Jackowo Dolne. Files of Kamienczyk district in the Middle Ages. Files of Historico-Geographical Dictionary of Masovia in the Middle Ages}, type={Text}, URL={http://www.rcin.org.pl/Content/236941/WA303_272997_KAM_Jackowo-Dolne.pdf}, keywords={Masovia (Poland ; region) - geography [KABA], Masovia, Middle Ages, settlement, Kamienczyk district}, }