@misc{_Opis_1959-1960,
 editor={Polska Akademia Nauk. Zakład Dendrologii i Pomologii w Kórniku},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={1959-1960},
 language={pol},
 title={Opis drzewa doborowego. Osika K-01-},
 type={Image},
 URL={http://www.rcin.org.pl/Content/145807/PDF/KOR001_177098_Osika-01.pdf},
 keywords={plus trees, chosen tree, selection of trees, genetics of forest trees, register of plus trees, Populus tremula, aspen},
}