@misc{Urban_Jan_Conservation_1994,
 author={Urban, Jan},
 volume={50},
 number={4},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1994},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={Conservation and popularization of geological heritage in Hungary},
 URL={http://www.rcin.org.pl/Content/75660/PDF/KR038_91633_r1994-t50-no4_ChPO-Urban-86-89.pdf},
 keywords={Hungary - geological heritage},
}