@misc{Mieszkowski_Karol_Ze_1977, author={Mieszkowski, Karol}, editor={Institute of History of the Polish Academy of Sciences}, copyright={Rights Reserved - Restricted Access}, address={Warszawa ; Poznań}, journal={Studia Źródłoznawcze}, howpublished={online}, year={1977}, publisher={Państwowe Wydawnictwo Naukowe}, language={pol}, title={Ze studiów nad dokumentami i kancelarią księcia Leszka Czarnego}, type={Text}, keywords={Polish diplomatics 13th c., Administrative documents - Poland - 13th c., Kings and rulers - Poland - 13th c. - archives, Leszek Czarny, Duke of Kraków, approximately 1240-1288}, }