@misc{Schirmer_Wilhelm_(1847-1923)_Heimatkunde,
 author={Schirmer, Wilhelm (1847-1923)},
 howpublished={online},
 publisher={W. Fröhlich},
 language={niemiecki},
 type={book},
 title={Heimatkunde des Herzogtums Schlesien},
 keywords={Historia, Śląsk, 1801-1900},
}