@misc{_Polen_[ca,
 editor={Müller, Franz (1755–1816). Ryt.},
 editor={T. Mollo et Compagnie},
 copyright={Public Domain},
 address={Wien},
 howpublished={online},
 year={[ca 1807]},
 publisher={bey T. Mollo und Comp.},
 language={ger},
 title={Polen Unter Oesterreich, Russland und Preussen getheilt},
 keywords={political-administrative maps, historical maps, Courland, Poland, 19th century},
}