@misc{_Marian,
 copyright={Public Domain},
 howpublished={online},
 title={Marian Gieysztor},
 type={Image},
 URL={http://www.rcin.org.pl/Content/85003/WA058_90866_Gieysztor_M.pdf},
 keywords={Gieysztor, Marian (1901-1961), zoologists, hydrobiologists, academics, biologists - Poland - biography},
}