@misc{S._Trzciński_w_Warszawie_Żabia_No_9_Witold,
 author={S. Trzciński w Warszawie, Żabia No 9},
 copyright={Public Domain},
 howpublished={online},
 title={Witold Eichler - portrait},
 type={Image},
 URL={http://rcin.org.pl/Content/83643/WA058_90796_Eichler_4.pdf},
 keywords={Eichler, Witold (1874-1960), naturalists, medicals, entomologists, travelers, collectors and collecting, biologists - Poland - biography},
}