@misc{Petrusewicz_K._A_1972,
 author={Petrusewicz, K. and Markov, G. and Gliwicz, J. and Christov, L.},
 volume={17},
 number={27},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1972},
 language={eng ; Sum. ang ; pol.},
 type={Text},
 title={A population of Clethrionomys glareolus pirinus on the Vitosha Mountain, Bulgaria. IV. Production},
 URL={http://rcin.org.pl/Content/10117/PDF/BI002_2613_Cz-40-2_Acta-T17-nr27-347-353_o.pdf},
 keywords={Bulgaria, Clethrionomys glareolus pirinus, population, production, produkcja, populacja},
}