@misc{Sawicki_Ludwik_(1893–1972)_N.,
 author={Sawicki, Ludwik (1893–1972)},
 volume={62},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Spuścizna prof. Ludwika Sawickiego : teczki archiwalne},
 howpublished={online},
 language={pol},
 title={N. Marr ...},
 type={Text},
 URL={http://www.rcin.org.pl/iae/Content/77573/PDF/WA308_91815_A-TA-LS-62-25_N-Marr_I.pdf},
 keywords={origin of languages -- theories, linguistic, pre-Indo-European languages},
}