@misc{Engel_Jacek_Synurbization_1988,
 author={Engel, Jacek and Keller, Marek and Leszkowicz, Jan and Zawadzki, Jerzy},
 volume={24},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 number={1},
 copyright={Rights Reserved - Free Access},
 journal={Acta Ornithologica},
 address={Warszawa},
 howpublished={online},
 year={1988},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={rus},
 language={pol},
 title={Synurbization of the mallard Anas platyrhynchos in Warsaw},
 type={Text},
 URL={http://www.rcin.org.pl/Content/42880/PDF/WA058_59150_P257-T24_Acta-Ornith-Nr-1-2.pdf},
 keywords={Mallard, synanthropic species, Poland, Warsaw, birds, Anas platyrhynchos, Anatidae, Aves},
}