@misc{_Opis_1960,
 editor={Polska Akademia Nauk. Zakład Dendrologii i Pomologii w Kórniku},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={1960},
 language={pol},
 title={Opis drzewa doborowego. Wierzba K-16-},
 type={Text},
 URL={http://rcin.org.pl/Content/147820/PDF/KOR001_177319_Wierzba-16.pdf},
 keywords={plus trees, chosen tree, selection of trees, genetics of forest trees, register of plus trees, Salix sp.},
}