@misc{_Karte,
 howpublished={online},
 publisher={Heymann C.},
 language={ger},
 type={mapy},
 title={Karte des Czarnikauer Kreises Regr. Bezk. Bromberg. Nowack gez. H. Delius lith.},
 keywords={Czarnków, Wielkopolska 19w.},
}