@misc{Fober_Henryk_Differentiation_1968,
 author={Fober, Henryk and Giertych, Maciej},
 volume={13},
 editor={Polska Akademia Nauk. Zakład Dendrologii i Pomologii w Kórniku},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Poznań ; Warszawa},
 journal={Arboretum Kórnickie},
 howpublished={online},
 year={1968},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={mul},
 title={Differentiation of spruce seedlings of Polish provenance given various levels of nitrogen and degrees of competition from grass},
 type={Text},
 URL={http://rcin.org.pl/Content/142058/PDF/KOR001_146121.pdf},
 keywords={Polish provenance of spruce, differentiation of spruce seedlings},
}