@misc{Raab_G.F._Oprac._Eisenbahn-Karte_[ante,
 author={Raab, G.F. Oprac.},
 copyright={Public Domain},
 address={Berlin},
 howpublished={online},
 year={[ante 1900]},
 publisher={Simon Schropp},
 language={ger},
 title={Eisenbahn-Karte von Russland},
 keywords={railway maps, Russia, Eastern Europe, 19th century},
}