@misc{Chałupka_Władysław_The_1977,
 author={Chałupka, Władysław and Giertych, Maciej},
 volume={22},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Poznań ; Warszawa},
 journal={Arboretum Kórnickie},
 howpublished={online},
 year={1977},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={mul},
 type={Text},
 title={The effect of polyethylene covers on the flowering of Norway spruce (Picea abies (L.) Karst.) grafts},
 title={The effect of polyethylene covers on the flowering of Norway spruce (Picea abies (L.) Karst.) grafts},
 URL={http://rcin.org.pl/Content/142446/PDF/KOR001_147197.pdf},
 keywords={flowering of Norway spruce, Picea abies, effect of polyethylene covers},
}