@misc{Acosta_Joaquín_(1799-1852)_Brief,
 author={Acosta, Joaquín (1799-1852) and Humboldt, Alexander von (1769-1859)},
 howpublished={online},
 language={fre},
 language={spa},
 type={rękopis},
 title={Brief von Joaquín Acosta an Alexander von Humboldt},
 keywords={rękopisy},
}