@misc{_Polen_[1939],
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={[1939]},
 publisher={[s.n.]},
 language={ger},
 language={pol},
 type={Image},
 title={Polen : [mapa ogólnogeograficzna]},
 keywords={chorographic maps, Poland},
}