@misc{_Plan,
 address={[s.l.]},
 howpublished={online},
 publisher={[s.n.]},
 language={ger},
 title={Plan der Stadt Bromberg},
 type={mapa},
 keywords={Bydgoszcz -- mapy -- 1901-1914 r, Bydgoszcz -- plan miasta, plany miast},
}