@misc{Humboldt_Alexander_von_(1769-1859)_Kosmos.,
 author={Humboldt, Alexander von (1769-1859)},
 howpublished={online},
 publisher={J. G. Cotta'scher Verlag},
 language={ger},
 type={książka},
 title={Kosmos. Bd. 1},
}