@misc{Petrusewicz_K._Productivity_1968,
 author={Petrusewicz, K. and Andrzejewski, R. and Bujalska, G. and Gliwicz, J.},
 volume={13},
 number={26},
 copyright={Rights Reserved - Free Access},
 journal={Acta Theriologica},
 address={Białowieża},
 howpublished={online},
 year={1968},
 language={eng ; sum . eng ; pol},
 title={Productivity investigation of an island population of Clethrionomys glareolus (Schreber, 1780). IV. Production},
 type={Text},
 URL={http://rcin.org.pl/ibs/Content/9665/PDF/BI002_2613_Cz-40-2_Acta-T13-nr26-435-445_o.pdf},
 keywords={Clethrionomys glareolus, island population, Bełdany Lake, population, productivity},
}