@misc{_Let’s_1975,
 volume={31},
 editor={Research Centre for the Protection of Nature of the Polish Academy of Sciences},
 number={1},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1975},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={Let’s protect Our Indigenous Nature Vol. 31 issue 1 (1975)},
}