@misc{Russocki_Stanisław_(1930–2002)_"Grupy_1963,
 author={Russocki, Stanisław (1930–2002)},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Kwartalnik Historyczny},
 howpublished={online},
 year={1963},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={"Grupy interesu" w społeczeństwie feudalnym},
 keywords={social classes - Middle Ages, pressure groups - Europe- Middle Ages},
}