@misc{Hoffmann_Carl_Topographisch-militarischer,
 author={Hoffmann, Carl},
 address={Breslau},
 howpublished={online},
 publisher={[s.n.]},
 language={ger},
 title={Topographisch-militarischer Plan der Umgegend Breslaus},
 keywords={19 w., mapa topograficzna, Wrocław, kartografia},
}