@misc{_Mapa_[ca,
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={[ca 1915]},
 publisher={[s.n.]},
 language={pol},
 title={Mapa powiatów komunalnych Gen.-Gub. Warszawskiego : 1:2.000.000},
 keywords={political-administrative maps, Poland},
}