@misc{Karolewski_Piotr_1998,
 author={Karolewski, Piotr},
 editor={Boratyński, Adam. Redaktor},
 editor={Bugała, Władysław. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Poznań},
 howpublished={online},
 year={1998},
 publisher={Bogucki Wydawnictwo Naukowe},
 language={mul},
 type={Text},
 URL={http://rcin.org.pl/Content/194013/PDF/KOR001_155753.pdf},
 keywords={Norway spruce, Picea abies, influence of industrial pollution},
}