@misc{Lahti_S._The_1974,
 author={Lahti, S. and Helminen, M.},
 volume={19},
 number={13},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1974},
 language={eng ; Sum. ang ; pol ; rus.},
 type={Text},
 title={The beaver Castor fiber (L.) and Castor canadensis (Kuhl) in Finland},
 URL={http://www.rcin.org.pl/Content/10203/PDF/BI002_2613_Cz-40-2_Acta-T19-nr13-177-189_o.pdf},
 keywords={Castor canadensis, Castor fiber, Finland, habitat selection, reintroduction, bóbr, reintrodukcja},
}