@misc{Grabda_Eugeniusz_(1908–1997)_Jerzy_[1929],
 author={Grabda, Eugeniusz (1908–1997)},
 copyright={Public Domain},
 howpublished={online},
 year={[1929]},
 title={Jerzy Ruszkowski and Kazimierz Demel on research ship "Ewa"},
 type={Image},
 URL={http://www.rcin.org.pl/Content/141691/PDF/WA058_158511_Ruszkowski-J_Grabda.pdf},
 keywords={Ruszkowski, Jerzy (1887-1934), Demel, Kazimierz (1889-1978), Markowski, Stanisław (1902-1971), naturalists, zoologists, parasitologists, helmintologists, marine biologists, research works, Marine station (Hel), Chair of Zoology UW, biologists - Poland - biography},
}