@misc{Alexandrowicz_Zofia_11._2000, author={Alexandrowicz, Zofia}, volume={Nr 46}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Kraków}, journal={Studia Naturae}, howpublished={online}, year={2000}, publisher={Institute of Nature Conservation of the Polish Academy of Sciences}, language={pol}, type={Text}, title={11. Conditions of caves' preservation and of access to the caves}, URL={http://www.rcin.org.pl/Content/79212/PDF/KR038_93077_r2000-t46_SN-Alexandrowicz-191-194.pdf}, keywords={Wieliczka salt mine, Crystal Caves}, }