@misc{Bugała_Władysław_Systematics_1973,
 author={Bugała, Władysław},
 volume={12},
 editor={Białobok, Stefan. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Warszawa-Poznań},
 journal={Nasze drzewa leśne},
 howpublished={online},
 year={1973},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={mul},
 type={Text},
 title={Systematics and variability},
 URL={http://rcin.org.pl/Content/187151/PDF/KOR001_154450_1973_Systematyka-i-zmienn.pdf},
 keywords={Populus, poplars, systematics of poplars, variability of poplars},
}