@misc{Mrass_Peter_Hindenburg,
 author={Mrass, Peter and Szczech, Bernard (1950-2022)},
 howpublished={online},
 publisher={Laumann-Verlag},
 language={pol},
 language={ger},
 type={album},
 title={Hindenburg O/S. Stadt und Industrie (bis 1945)},
 keywords={Zabrze, Hindenburg O.S., historia miasta, przemysł},
}