@misc{Michalik_Stefan_Seminatural_1989,
 author={Michalik, Stefan},
 volume={45},
 editor={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 number={3},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Warszawa},
 address={Kraków},
 howpublished={online},
 year={1989},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={Seminatural biocoenoses in national parks and nature reserves, their importance and the sense of purpose to protect them},
 type={Text},
 URL={http://rcin.org.pl/Content/84510/PDF/KR038_107393_r1989-t45-no3_ChPO-Michalik-21-29.pdf},
}