@misc{Grudziński_Tadeusz_(1924–2015)_The_1974,
 author={Grudziński, Tadeusz (1924–2015)},
 volume={30},
 editor={Szymanowski, Antoni. Tr.},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY-ND 4.0 license},
 address={Wrocław},
 journal={Acta Poloniae Historica},
 howpublished={online},
 year={1974},
 publisher={Zakład Narodowy im. Ossolińskich},
 language={eng},
 type={Text},
 title={The Beginnings of Feudal Disintegration in Poland},
 URL={http://rcin.org.pl/Content/6460/PDF/WA303_20570_1974-30_APH_01_o.pdf},
 keywords={Poland - Middle Ages, Poland - 1138-1320, Middle Ages, Feudalism, Polish State, Piast dynasty},
}