@misc{Pernetta_J._C._Population_1977,
 author={Pernetta, J. C.},
 volume={22},
 number={20},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1977},
 language={eng ; sum. eng. ; pol.},
 type={Text},
 title={Population ecology of British shrews in grassland},
 URL={http://rcin.org.pl/Content/10468/PDF/BI002_2613_Cz-40-2_Acta-T22-nr20-279-296_o.pdf},
 keywords={activity, age determination, density, dispersal, population ecology, grassland, letter size, shrews, Sorex araneus, Sorex minutus, ryjówka, aktywność płciowa, wielkość miotu, zagęszczenie, rozmieszczenie},
}