@misc{Browicz_Kazimierz_Geographical_1979,
 author={Browicz, Kazimierz},
 volume={7},
 editor={Białobok, Stefan. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Warszawa-Poznań},
 journal={Nasze drzewa leśne},
 howpublished={online},
 year={1979},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 type={Text},
 title={Geographical distribution of birches.},
 URL={http://rcin.org.pl/Content/161532/PDF/KOR001_153979_1979_Geograficzne-rozmies.pdf},
 keywords={Betula, geographical distribution},
}