@misc{_Keys_1981,
 editor={Pucek, Zdzisław (1930–2007)},
 editor={Stachurska, Jadwiga. Tr.},
 editor={Bibrich, Magdalena. Tr.},
 copyright={Rights Reserved - Restricted Access},
 address={Warszawa},
 howpublished={online},
 year={1981},
 publisher={Mammal Research Institute Polish Academy of Sciences},
 language={eng},
 title={Keys to vertebrates of Poland: mammals},
 type={Text},
 keywords={Mammals -- Poland -- identification},
}