@misc{Konca_Bernard_The_1978,
 author={Konca, Bernard},
 volume={34},
 number={1},
 editor={Research Centre for the Protection of Nature of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1978},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={The trees on the Drava river worthy of protection},
 type={Text},
 URL={http://www.rcin.org.pl/Content/80880/PDF/KR038_103529_r1978-t34-no1_ChPO-Konca-32-38.pdf},
}