@misc{Berghaus_Heinrich_Karl_Wilhelm_(1797-1884)_Brief, author={Berghaus, Heinrich Karl Wilhelm (1797-1884) and Humboldt, Alexander von (1769-1859)}, howpublished={online}, language={ger}, language={fre}, type={rękopis}, title={Brief von Heinrich Karl Wilhelm Berghaus an Johann Jakob Weber}, keywords={rękopisy}, }