@misc{Lewiński_Jan_(1876–1939)_Zadania_1914,
 author={Lewiński, Jan (1876–1939)},
 copyright={Public Domain},
 address={Warszawa},
 howpublished={online},
 year={1914},
 publisher={[s.n.]},
 publisher={(Druk. K. Kowalewskiego)},
 language={pol},
 type={Text},
 title={Zadania i metody geologii historycznej},
 URL={http://rcin.org.pl/Content/16199/PDF/WA004_18975_P11942-Lewinski-Zadania-i-m_o.pdf},
 keywords={historical geology},
}