@misc{_Übersichtskarte_[1941],
 editor={Gea Verlag},
 editor={Berliner Lithographisches Institut},
 copyright={Public Domain},
 address={Berlin},
 howpublished={online},
 year={[1941]},
 publisher={Gea Verlag},
 publisher={Berliner Lithographisches Institut},
 language={ger},
 title={Übersichtskarte 1:1 000 000 : Ostblatt},
 keywords={chorographic maps, political-administrative maps, Poland, East Europe},
}