@misc{Humboldt_Alexander_von_(1769-1859)_Brief, author={Humboldt, Alexander von (1769-1859) and Pansner, Johann Heinrich Lorenz (1777-1851) [ermittelt]}, howpublished={online}, language={ger}, language={fre}, title={Brief von Alexander von Humboldt an Heinrich Karl Wilhelm Berghaus}, type={rękopis}, keywords={rękopisy}, }