@misc{Hass_Ludwik_(1918–2008)_Materiały_1961,
 author={Hass, Ludwik (1918–2008)},
 volume={68},
 editor={Institute of History of the Polish Academy of Sciences},
 number={4},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Kwartalnik Historyczny},
 howpublished={online},
 year={1961},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={Materiały do bibliografii polskiego ruchu robotniczego},
 URL={http://rcin.org.pl/Content/30926/PDF/WA303_39244_A52-KH-R-68-4_Hass.pdf},
 keywords={labor movement - Poland - 1900-1945 - bibliography},
}