@misc{_Grad,
 howpublished={online},
 language={ger},
 title={Grad Abtheilung 55°/54° der Breite, 34°/35° der Länge, Bande V. Blatt 5.},
 type={cartography},
 keywords={Cartography - 19th century, Cartography - history, Slawno (West Pomeranian Province) - geography},
}