@misc{_Karte_1856,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1856},
 publisher={Kgl. Preuss. Generalstab},
 language={ger},
 title={Karte des Deutschen Reiches 1:100 000 - 351 (225). Kajew},
}