@misc{_Freytag_[1920],
 editor={Kartographische Anstalt G. Freytag & Berndt},
 copyright={Public Domain},
 address={Wien},
 address={Leipzig},
 howpublished={online},
 year={[1920]},
 publisher={Kartogr. Anst. G. Freytag & Berndt},
 language={ger},
 language={pol},
 title={Freytag & Berndt's Automobil- und Radfahrerkarten. Blatt 61, Warschau},
 keywords={road maps, Warsaw region},
}