@misc{Etzel_Franz_August_von_(1784-1850)_Lauf_[1831],
 author={Etzel, Franz August von (1784-1850) and Ritter, Carl (1779-1859)},
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 address={Berlin},
 howpublished={online},
 year={[1831]},
 publisher={G. Reimer},
 title={Lauf des Nils von Kous bis Cairo},
 keywords={19 w., mapa ogólnogeograficzna, Nil},
}