@misc{Zienkowicz_Feliks_(1842–1910)_List,
 author={Zienkowicz, Feliks (1842–1910)},
 howpublished={online},
 title={List Feliksa Zienkowicza 23.03.1877, Irkuck},
 type={Image},
 URL={http://rcin.org.pl/Content/238552/WA058_275144_Zienkowicz_M1939.pdf},
 keywords={Baikal, Lake (Russia), Baikal (region), Czerski, Jan (1845-1892 ; geologist, paleontologist, a Siberia's researcheri), Irkuck (Russia ; region)--19 w., Syberia, biologists - Poland- biography},
}