@misc{Zaniewski_L._Sex_1965, author={Zaniewski, L.}, volume={10}, number={21}, copyright={Rights Reserved - Free Access}, address={Białowieża}, journal={Acta Theriologica}, howpublished={online}, year={1965}, language={eng ; sum . pol}, type={Text}, title={Sex determination in the European beaver Castor fiber Linnaeus, 1758}, URL={http://rcin.org.pl/Content/9353/PDF/BI002_2613_Cz-40-2_Acta-T10-nr21-297-301_o.pdf}, keywords={Castor fiber, sex determination, beaver}, }