@misc{Lehmann_Emil_(1823-1887)_Brief,
 author={Lehmann, Emil (1823-1887) and Bopp, Franz (1791-1867)},
 howpublished={online},
 language={ger},
 type={rękopis},
 title={Brief von Franz Bopp, ... Lehmann und Alexander von Humboldt an Alexander von Humboldt},
 keywords={rękopisy},
}