@misc{_Acta_1996,
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1996},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 language={rus},
 title={Acta Ornithologica ; vol. 31 - Spis treści},
 type={Text},
 URL={http://rcin.org.pl/miiz/Content/42926/PDF/WA058_32155_P257-T31_Acta-Ornith-Spis-t31.pdf},
 keywords={Poland, birds, periodicals, ornithology},
}