@misc{Bednorz_Jan_Bocian_1974,
 author={Bednorz, Jan},
 volume={R. 39},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 address={Kraków},
 journal={Protection of Nature},
 howpublished={online},
 year={1974},
 publisher={Nature Conservation Research Centre of the Polish Academy of Sciences},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={Bocian czarny, Ciconia nigra (L.) w Polsce},
 title={The black stork, Ciconia nigra (L.) in Poland},
 URL={http://rcin.org.pl/Content/164625/PDF/KR038_198792_r1974-r39_OP-Bednorz-201-243.pdf},
}