@misc{Humboldt_Alexander_von_(1769-1859)_Cartes,
 author={Humboldt, Alexander von (1769-1859) and Nieznany},
 howpublished={online},
 language={fre},
 type={rękopis},
 title={Cartes Mexique (Manuskripttitel)},
 keywords={rękopisy},
}