@misc{_Karte,
 howpublished={online},
 publisher={Berlin},
 language={ger},
 type={mapy},
 title={Karte des Gnesner Kreises Regr. Bezk. Bromberg [...]. Nowack gez., H. Delius lith.},
 keywords={Gniezno, Wielkopolska 19w., Ziemia gnieźnieńska},
}