@misc{Kühn_O._Fossilium,
 author={Kühn, O.},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={W. Junk},
 language={ger},
 type={czasopismo},
 title={Fossilium Catalogus. I, Animalia. Pars 36: O. Kühn, Hydrozoa},
 keywords={paleontologia, czasopisma},
}