@misc{Klich_Mariusz_Tempo_2006,
 author={Klich, Mariusz},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 howpublished={online},
 year={2006},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Tempo wzrostu i struktura wiekowa wybranych gatunków ryb w Górnej Wiśle},
 title={Growth rate and age structure of chosen fish species in the Upper Vistula River},
 type={Text},
 URL={http://www.rcin.org.pl/Content/151861/PDF/KR038_173167_r2006_Ichtiof-Klich-111-136.pdf},
 keywords={ichthyofauna, freshwater biology, hydrology},
}