@misc{Sawicki_Ludomir_(1884-1928)_Das,
 author={Sawicki, Ludomir (1884-1928)},
 howpublished={online},
 publisher={A. Hartleben's Verlag},
 language={ger},
 type={książka},
 title={Das entwicklungsgeschichtliche Element in der Geographie},
}