@misc{_Kreis,
 address={Lissa},
 howpublished={online},
 publisher={Friedrich Ebbecke's Verlag},
 publisher={Lith. u. Druck. v. Paul Baron},
 language={ger},
 title={Kreis Wirsitz},
 type={mapa},
 keywords={Wyrzysk (okręg) -- mapy -- 1901-1914 r, mapy topograficzne},
}