@misc{Institute_of_History_of_the_Polish_Academy_of_Sciences_Cieszki., 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={Cieszki. Files of Sierpc district in the Middle Ages. Files of Historico-Geographical Dictionary of Masovia in the Middle Ages}, type={Text}, keywords={Masovia (Poland ; region) - geography [KABA], Masovia, Middle Ages, settlement, Sierpc district}, }