@misc{_Karte_1914,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1914},
 publisher={Preussischen Landesaufnahme},
 language={ger},
 title={Karte des Deutschen Reiches 1:100 000 - 274. Birnbaum},
}