@misc{Kościelniak_Robert_Changes_2007,
 author={Kościelniak, Robert},
 volume={Nr 54 cz. I},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Studia Naturae},
 howpublished={online},
 year={2007},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={Changes in lichen biota in the area of the Bieszczady National Park in the last 50 years},
 URL={http://rcin.org.pl/Content/119436/PDF/KR038_94711_r2007-t54-1_SN-Koscielniak-133-144.pdf},
 keywords={protected natural areas, Bieszczady National Park, lichens, Lichenes},
}