@misc{Kowalski_K._Materiały_1960,
 author={Kowalski, K.},
 volume={4},
 number={14},
 copyright={Rights Reserved - Free Access},
 journal={Acta Theriologica},
 address={Białowieża},
 howpublished={online},
 year={1960},
 language={pol},
 title={Materiały do znajomości ssaków Puszczy Piskiej; Small mammals from "Puszcza Piska" in Northern Poland},
 type={Text},
 URL={http://www.rcin.org.pl/Content/8019/PDF/BI002_2613_Cz-40-2_Acta-T4-nr14-295-296_o.pdf},
 keywords={mammals, Piska Forest, small mammals},
}