@misc{Humboldt_Alexander_von_(1769-1859)_Brief,
 author={Humboldt, Alexander von (1769-1859) and Buschmann, Johann Carl Eduard (1805-1880)},
 howpublished={online},
 language={ger},
 language={lat},
 type={rękopis},
 title={Brief von Alexander von Humboldt an Johann Carl Eduard Buschmann},
 keywords={rękopisy},
}