@misc{Berger_Leszek_(1925–_)_Hybrids_1976,
 author={Berger, Leszek (1925– )},
 volume={33},
 editor={Muzeum i Instytut Zoologii Polskiej Akademii Nauk},
 number={12},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 journal={Annales Zoologici},
 howpublished={online},
 year={1976},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={pol},
 language={rus},
 type={Text},
 title={Hybrids of Bp2s-R generations of European water frogs (Rana esculenta Complex)},
 keywords={Poland, zoology, periodicals},
}