@misc{Mahr_R._Redaktor_Székely-Udvarhely_1913,
 author={Mahr, R. Redaktor and Brenner, G. (18..-19..). Redaktor},
 copyright={Public Domain},
 address={[Wiedeń]},
 journal={Spezialkarte der österreichisch-ungarischen Monarchie 1:75.000},
 howpublished={online},
 year={1913},
 publisher={[wydawca nieznany]},
 language={ger},
 type={Image},
 title={Székely-Udvarhely : Zone 20 Kol. XXXII},
 URL={http://www.rcin.org.pl/igipz/Content/156989/PDF/WA51_178336_PANC583-273-r1913_Szekely-Udvarhely-.pdf},
 keywords={topographic maps, Odorheiu Secuiesc (Romania ; region)},
}