@misc{_Karta_1826,
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={1826},
 publisher={[s.n.]},
 language={pol},
 language={fre},
 title={Karta pocztowa Królestwa Polskiego = Carte des postes du Royaume de Pologne},
 keywords={transport maps, postal maps, Kingdom of Poland, Poland, 19th century},
}