@misc{_Mappa_[ca,
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={[ca 1847]},
 publisher={[s.n.]},
 language={pol},
 title={Mappa powiatu wieluńskiego},
 keywords={chorographic maps, Wieluń county, Wieluń, 19th century},
}