@misc{Staszkiewicz_Jerzy_The_1985,
 author={Staszkiewicz, Jerzy},
 volume={41},
 editor={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 number={6},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Warszawa},
 address={Kraków},
 howpublished={online},
 year={1985},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={The birches Betula x oycoviensis and Betula szaferi in the Beskid Wyspowy mountain range},
 type={Text},
 URL={http://rcin.org.pl/Content/83811/PDF/KR038_104775_r1985-t41-no6_ChPO-Staszkiewicz-36-41.pdf},
 keywords={Betula oycoviensis, Betula szaferi, Beskid Wyspowy},
}