@misc{_Let’s_1991,
 volume={47},
 number={5},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1991},
 publisher={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 language={pol},
 title={Let’s protect Our Indigenous Nature Vol. 47 issue 5 (1991)},
 type={Text},
}