@misc{Andrzejewski_R._Mass_1961,
 author={Andrzejewski, R. and Wrocławek, H.},
 volume={5},
 number={13},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1961},
 language={eng ; s um . pol},
 type={Text},
 title={Mass occurrence of Apodemus agrarius (Pallas, 1771) and variations in the number of associated Muridae; Masowy pojaw Apodemus agrarius (Pallas, 1771) na tle dynamiki liczebności innych myszowatych},
 URL={http://rcin.org.pl/Content/8098/PDF/BI002_2613_Cz-40-2_Acta-T5-nr13-173-184_o.pdf},
 keywords={Apodemus, Apodemus agrarius, Apodemus flavicollis, Clethrionomys glareolus, mass occurrence, numbers, occurrence, variation, variations},
}