@misc{Jabłoński_Bolesław_(1937–_)_Estimation_1976,
 author={Jabłoński, Bolesław (1937– )},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1976},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 type={Text},
 title={Estimation of birds abundance in large areas},
 keywords={birds, counting, Poland, Masovian Plain, Mazowsze Plain, Aves},
}