@misc{Jäck_Carl_(?-1809)_Poznań,
 author={Jäck, Carl (?-1809)},
 howpublished={online},
 language={ger},
 type={mapy},
 title={Poznań - 1795 - okolice},
 keywords={Poznań, Poznań 18w., plany polskich miast},
}