@misc{Lewiński_Jan_(1876–1939)_Podstawy_1922,
 author={Lewiński, Jan (1876–1939)},
 copyright={Public Domain},
 address={Warszawa},
 howpublished={online},
 year={1922},
 publisher={Gebethner i Wolff},
 language={pol},
 title={Podstawy mineralogji i geologji dla klas wyższych szkół średnich},
 keywords={mineralogy -- manual, geography -- manual},
}