@misc{Encke_Johann_Franz_(1791-1865)_Brief,
 author={Encke, Johann Franz (1791-1865) and Humboldt, Alexander von (1769-1859)},
 howpublished={online},
 language={ger},
 type={rękopis},
 title={Brief von Johann Franz Encke an Alexander von Humboldt},
 keywords={rękopisy},
}