@misc{Alexandrowicz_Zofia_The_1990,
 author={Alexandrowicz, Zofia},
 volume={R. 47},
 editor={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 address={Kraków},
 journal={Protection of Nature},
 howpublished={online},
 year={1990},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 type={Text},
 title={The optimum system of tors protection in Poland},
 title={Optymalny system ochrony skałek w Polsce},
 URL={http://rcin.org.pl/Content/145749/PDF/KR038_90154_r1990-r47_OP-Alexandrowicz-277-308.pdf},
 keywords={geology, inanimate nature conservation, tors},
}