@misc{_Karte_1911,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1911},
 publisher={Kartographische Abtheilung d. Königl. Preuss Landes-Aufnahme},
 type={obraz},
 title={Karte des westlichen Russlands 1:100 000 - F 31. Drobin},
 keywords={mapa ogólnogeograficzna},
}