@misc{_Plan,
 address={[Bydgoszcz]},
 howpublished={online},
 publisher={[Paul Berthold Jaekel ?]},
 language={ger},
 type={mapa},
 title={Plan der Stadt Bromberg},
 keywords={Bydgoszcz -- mapy -- 19 w, Bydgoszcz -- plan miasta},
}