@misc{_Heimatkarte,
 address={Breslau},
 address={Dt. Lissa},
 howpublished={online},
 publisher={Flemmings Verlag},
 language={ger},
 title={Heimatkarte des Kreises Oppeln},
 type={mapa},
 keywords={Opole (okręg) -- mapy -- 1918-1939 r},
}