@misc{_Let’s_1951,
 volume={7},
 number={5/6},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1951},
 publisher={Commitee of Nature Protection of the Polish Academy of Learning},
 language={pol},
 type={Text},
 title={Let’s protect Our Indigenous Nature Ann. 7 no. 5/6 (1951)},
}