@misc{Nowakowski_Jacek_J._Changes_1996,
 author={Nowakowski, Jacek J.},
 volume={31},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 editor={International Ornithological Congress (21 ; 1994 ; Wiedeń)},
 number={1},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Acta Ornithologica},
 address={Warszawa},
 howpublished={online},
 year={1996},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 title={Changes in the breeding avifauna of Olsztyn (NE Poland) in the years 1968-1993},
 type={Text},
 URL={http://rcin.org.pl/Content/42932/PDF/WA058_60518_P257-T31_Acta-Ornith-Nr-1-5.pdf},
 keywords={breeding birds, Poland, Olsztyn, congresses, changes of fauna, urban birds, bird communities, urban environment, birds, 1968-93, Aves},
}