@misc{Wiesner_J._B._Charte_[ca,
 author={Wiesner, J. B. and Berndt, Johann Christian Gottlieb (1795–1853). Oprac.},
 editor={Berndt, Johann Christian Gottlieb (1795–1853). Oprac.},
 copyright={Public Domain},
 address={Breslau},
 howpublished={online},
 year={[ca 1827]},
 publisher={Lithographie und Verlag von Fr. Hentze},
 language={ger},
 title={Charte von Schlesien},
 keywords={chorographic maps, Silesia, 19th century},
}