@misc{Siwecki_Ryszard_More_1983,
 author={Siwecki, Ryszard and Krzan, Zbigniew},
 volume={4},
 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={1983},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={More important diseases and insects},
 type={Text},
 keywords={Abies alba, fir, diseases of fir, pests of fir},
}