@misc{Le_Boulengé_E._Two_1977,
 author={Le Boulengé, E.},
 volume={22},
 number={34},
 copyright={Rights Reserved - Free Access},
 journal={Acta Theriologica},
 address={Białowieża},
 howpublished={online},
 year={1977},
 language={eng ; sum. eng. ; pol.},
 title={Two ageing methods for muskrats: live or dead animals},
 type={Text},
 URL={http://www.rcin.org.pl/Content/10483/PDF/BI002_2613_Cz-40-2_Acta-T22-nr34-509-520_o.pdf},
 keywords={ageing methods, crystalline lens weight, Ondatra zibethicus, tail length, muskrat, określanie wieku, piżmak},
}