@misc{Staszkiewicz_Jerzy_Betula_2014,
 author={Staszkiewicz, Jerzy},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 howpublished={online},
 year={2014},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={Betula szaferi Jent.-Szaf. ex Stasz. Brzoza Szafera},
 URL={http://rcin.org.pl/Content/126916/PDF/KR038_149441_r2014_PCzKR-Staszkiewicz-91-92.pdf},
 keywords={red data book, flowering plants, Anthophyta, Betula szaferi},
}