@misc{Raczyński_Jan_(1936–_)_The_1974,
 author={Raczyński, Jan (1936– ) and Ruprecht, Andrzej L. (1935–2010)},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1974},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 type={Text},
 title={The effect of digestion on the osteological composition of owl pellets},
 URL={http://www.rcin.org.pl/Content/15693/PDF/WA058_32422_P257-T14_Acta-Ornith-Nr-2.pdf},
 keywords={owls, pellets, Poland, Białowieża, osteology, birds, Strigiformes, Aves},
}