@misc{Siwecki_Ryszard_More_1979,
 author={Siwecki, Ryszard},
 volume={7},
 editor={Białobok, Stefan. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 journal={Nasze drzewa leśne},
 address={Warszawa-Poznań},
 howpublished={online},
 year={1979},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={More important diseases and pests},
 type={Text},
 keywords={Betula, birch, diseases of birch, pest insects of birch},
}