@misc{_Mapka_[post,
 copyright={Public Domain},
 address={Lwów},
 howpublished={online},
 year={[post 1922]},
 publisher={"Atlas" Instytut Kartograficzny},
 language={pol},
 title={Mapka Europy : podług nowych traktatów : podziałka 1:20 000 000},
 keywords={political-administrative maps, Europe, 20th century},
}