@misc{_Julius,
 copyright={Public Domain},
 howpublished={online},
 title={Julius Gerhardt},
 type={Image},
 URL={http://rcin.org.pl/Content/154339/PDF/WA058_174200_Gerhardt-Julius_KEF352.pdf},
 keywords={Gerhardt, Julius (1827-1912), naturalists, biologists, botanists, entomologists, academics, teachers, promoters of science, Legnica, dolnośląskie voivodeship (Poland), Liegnitz},
}