@misc{Okarma_Henryk_Rola_2007,
 author={Okarma, Henryk},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 howpublished={online},
 year={2007},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Rola ssaków drapieżnych w przyrodzie},
 type={Text},
 URL={http://rcin.org.pl/iop/Content/79402/PDF/KR038_97980_r2007_IntegOP-Okarma-97-101.pdf},
 keywords={predators, predatory mammals},
}