@misc{_Wilna,
 address={[Berlin]},
 howpublished={online},
 publisher={Kartographische Abteilung d. Königl. Preuss. Landes-Aufnahme},
 language={pol},
 language={ger},
 title={Wilna Q 23},
 title={Q 23 Wilna},
 type={mapa},
 keywords={Wilno (Litwa), Wilno - okolice},
}