@misc{Böhmer_J._Karte,
 author={Böhmer, J.},
 address={[s.l.]},
 howpublished={online},
 publisher={[s.n.]},
 language={ger},
 title={Karte der Stadt Thorn nebst Umgegend},
 type={mapa},
 keywords={plan Torunia, Toruń – okolice, Podgórz (Toruń) - poligon},
}