@misc{Leśniewicz_K._The_1989,
 author={Leśniewicz, K. and Perzanowski, K.},
 volume={34},
 number={27},
 copyright={Rights Reserved - Free Access},
 journal={Acta Theriologica},
 address={Białowieża},
 howpublished={online},
 year={1989},
 language={eng ; sum. eng. ; pol.},
 title={The winter diet of wolves in Bieszczady Mountains},
 type={Text},
 URL={http://rcin.org.pl/Content/11343/PDF/BI002_2613_Cz-40-2_Acta-T34-nr27-373-380_o.pdf},
 keywords={Canis lupus, diet, food requirements, winter diet, Poland, żołądek, treść pokarmowa, pokarm, dieta},
}