@misc{Jakuczun_Bogdan_The_1972,
 author={Jakuczun, Bogdan},
 volume={28 nowa seria},
 number={1},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Kraków},
 howpublished={online},
 year={1972},
 publisher={Polish Academy of Sciences},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={The nutcracker, Nicufraga caryocatactes megarhynchos Brehm in the Wolin National Park},
 type={Text},
 URL={http://www.rcin.org.pl/Content/74023/PDF/KR038_92682_r1972-t28-no1_ChPO-Jakuczun-53-55.pdf},
 keywords={nutcracker, Wolin National Park, Nucifraga caryocatactes megarhynchos},
}