@misc{Urban_Jan_The_1989,
 author={Urban, Jan},
 volume={45},
 editor={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 number={2},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1989},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={The protection of some specimens of inanimate nature in the Holy Cross region which have already been subjected to legal protection or are worthy of protection},
 URL={http://rcin.org.pl/Content/73904/PDF/KR038_91377_r1989-t45-no2_ChPO-Urban-66-73.pdf},
 keywords={Holy Cross Mountains (region), Holy Cross National Park, inanimate nature conservation, Niecka Nidziańska},
}