@misc{_Karte_1876,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1876},
 publisher={Kgl. Preuss. Generalstab},
 language={ger},
 title={Karte des Deutschen Reiches 1:100 000 - 474 (294). Silberberg},
}