@misc{_Geologische_1937,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1937},
 publisher={Sächsischen Geologischen Landesamt},
 title={Geologische Karte 1:25 000 - 2942 (90, 108) Hirschfelde},
 keywords={mapa geologiczna},
}