@misc{Pokrovski_A._V._Natural_1968, author={Pokrovski, A. V. and Bolshakov, V. N.}, volume={13}, number={9}, copyright={Rights Reserved - Free Access}, journal={Acta Theriologica}, address={Białowieża}, howpublished={online}, year={1968}, language={rus ; sum . eng ; pol}, title={Natural and potential fertility of two species of high mountain voles}, type={Text}, URL={http://rcin.org.pl/ibs/Content/9690/PDF/BI002_2613_Cz-40-2_Acta-T13-nr9-117-128_o.pdf}, keywords={Alticola roylei argentata, Alticola strelzovi, natural fertility, potential fertility, voles}, }