@misc{_Let’s_1991, volume={47}, number={4}, 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 4 (1991)}, type={Text}, }