@misc{Mihelsons_Harijs_Study_1980,
 author={Mihelsons, Harijs},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 editor={International Conference on the Study and Conservation of the Migratory Birds of the Baltic Basin (2 ; 1977 ; Sopot)},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1980},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 title={Study of population ecology of ducks by ringing},
 type={Text},
 keywords={Mallard, ecology, Latvia, Baltic Sea, congresses, Engure, Lake, banding of birds, populations, Northern Shoveler, Tufted Duck, birds, Anas clypeata, Aythya fuligula, Anatidae, Aves},
}