@misc{Beszterda_Piotr_(1955–_)_Wintering_1983,
 author={Beszterda, Piotr (1955– ) and Panek, Marek and Majewski, Przemysław},
 editor={Polska Akademia Nauk. Instytut Zoologii.},
 editor={Gromadzki, Maciej (1940– ). Red.},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1983},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={rus},
 language={pol},
 title={Wintering of the mute swan Cygnus olor, and the whooper swan Cygnus cygnus, in flooded area of the Warta river mouth},
 type={Text},
 keywords={Mute Swan, Hooper Swan, Whooper Swan, Poland, Słońsk Nature Reserve, Warta river mouth, wintering, flooded area, birds, Cygnus cygnus, Cygnus olor, Anatidae, Aves, 1977-81},
}