@misc{Sawicki_Ludwik_(1893–1972)_Das,
 author={Sawicki, Ludwik (1893–1972)},
 volume={55},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Spuścizna prof. Ludwika Sawickiego : teczki archiwalne},
 howpublished={online},
 language={ger},
 title={Das alter der Swiderian Industrie im Lichte der Geomorphologie des Weichselurstromtales der Umgebung von Warschau},
 type={Text},
 URL={http://www.rcin.org.pl/iae/Content/77833/PDF/WA308_91030_A-TA-LS-55-12_Das-alter-der-Swider_I.pdf},
 keywords={Upper Paleolithic -- Poland, Świder (Otwock, Polska), Swiderian culture, Swiderian culture flint industries, Swiderian culture flint objects -- typology, Otwock, mazowieckie voivodeshiip (Poland)},
}