@misc{Sawicki_Ludwik_(1893–1972)_Szurf,
 author={Sawicki, Ludwik (1893–1972)},
 volume={42},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Spuścizna prof. Ludwika Sawickiego : teczki archiwalne},
 howpublished={online},
 language={pol},
 title={Szurf III},
 type={Text},
 URL={http://www.rcin.org.pl/Content/75677/PDF/WA308_89846_A-TA-LS-42-2_Szurf-III_I.pdf},
 keywords={geological research, Szeląg (Poznań, Poland), Poznań, wielkopolskie voivodeship (Poland)},
}