@misc{Barnikel_Johann_Christoph_Dvcatvs_1747,
 author={Barnikel, Johann Christoph and Homännische Erben},
 copyright={Public Domain},
 address={Norimbergae},
 howpublished={online},
 year={1747},
 publisher={studio Homannianorum Heredum},
 language={lat},
 language={fre},
 title={Dvcatvs Cvrlandiæ},
 title={Le Dvché de Covrlande},
 title={Ducatus Curlandiae},
 title={Le Duché de Curlande},
 keywords={chorographic maps, Courland, 18th century},
}