@misc{Czekalski_Mieczysław_Monumental_1982,
 author={Czekalski, Mieczysław},
 volume={38},
 editor={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 number={4-5},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Warszawa},
 address={Kraków},
 howpublished={online},
 year={1982},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={Monumental specimens of the black alder, Alnus glutinosa},
 type={Text},
 URL={http://www.rcin.org.pl/Content/83780/PDF/KR038_99369_r1982-t38-no4-5_ChPO-Czekalski-51-59.pdf},
 keywords={black alder, Alnus glutinosa},
}