@misc{Kajak_Zdzisław_IV_1959,
 author={Kajak, Zdzisław},
 volume={5},
 editor={Polska Akademia Nauk. Komitet Ekologiczny},
 number={1},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 journal={Ekologia Polska. Seria B},
 howpublished={online},
 year={1959},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={IV Zjazd Hydrobiologów Polskich w Krakowie},
 URL={http://rcin.org.pl/Content/114775/PDF/WA058_97627_P3259-5_Eko-Pol-B.pdf},
 keywords={aquatic biology, congresses},
}