@misc{_Mapa_[1912],
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={[1912]},
 publisher={[s.n.]},
 language={pol},
 title={Mapa letnisk w okolicach Warszawy},
 keywords={topographical maps, Warsaw region, Nałęczów region, Ojców region},
}