@misc{Gostyńska-Jakuszewska_Maria_The_1975,
 author={Gostyńska-Jakuszewska, Maria},
 volume={20},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Poznań ; Warszawa},
 journal={Arboretum Kórnickie},
 howpublished={online},
 year={1975},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={mul},
 type={Text},
 title={The use of numerical methods in the systematics of hawthorns occurring in Poland},
 URL={http://www.rcin.org.pl/Content/142417/PDF/KOR001_146993.pdf},
 keywords={Crategus, hawthorns occuring in Poland, numerical methods, systematics of hawthorns},
}