@misc{Chałupka_Władysław_Cyclic_1977,
 author={Chałupka, Władysław and Giertych, Maciej and Królikowski, Zbigniew},
 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={Cyclic pattern of growth intensity in spruce and pine},
 title={Cyclic pattern of growth intensity in spruce and pine},
 keywords={growth intensity in spruce, growth intensity in pine, cuclic pattern of growth},
}