@misc{Walkiewicz_Władysław_(1833–1900)_Jan_[s.n.],
 author={Walkiewicz, Władysław (1833–1900)},
 copyright={Public Domain},
 howpublished={online},
 year={[s.n.]},
 publisher={[s.l.]},
 language={pol},
 title={Jan Śniadecki. : Jaśnie Oświeconemu Księciu Panowi Tadeuszowi Lubomirskiemu},
 type={Image},
 URL={http://rcin.org.pl/miiz/Content/29020/PDF/WA058_26073_AIZ-F588_Jan-Sniad-ikon.pdf},
 keywords={Śniadecki, Jan (1756-1830), litography, portraits, Polish graphics},
}