@misc{Józefik_Mieczysław_(1930–_)_Studies_1970,
 author={Józefik, Mieczysław (1930– )},
 editor={Polska Akademia Nauk. Instytut Zoologiczny},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1970},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 title={Studies on the squacco heron, Ardeola ralloides (Scop.) 3. Geographical variability in the critical and mean micropopulation size},
 type={Text},
 URL={http://rcin.org.pl/Content/14306/PDF/WA058_30667_P257-T12_Acta-Ornith-Nr-3.pdf},
 keywords={Squacco Heron, ecology, populations, Palearctic Region, geographical variability, micropopulations, herons, birds, Ardeola ralloides, Ardeidae, Aves},
}