@misc{_Acta_1984,
 editor={Polska Akademia Nauk. Instytut Zoologii},
 copyright={Public Domain},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1984},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 title={Acta Ornithologica ; vol 20 - Spis treści},
 type={Text},
 URL={http://rcin.org.pl/Content/37508/PDF/WA058_31695_P257-T20_Acta-Ornith-Spis-t20.pdf},
 keywords={Poland, birds, periodicals, ornithology},
}