@misc{_Ekologia_1973,
 volume={21},
 editor={Polish Academy of Sciences, Institute of Ecology},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 journal={Ekologia Polska},
 howpublished={online},
 year={1973},
 publisher={Państwowe Wydawnictwa Naukowe},
 language={pol},
 language={eng},
 language={ger},
 language={fre},
 title={Ekologia Polska t. 21 (1973)},
 type={Text},
 keywords={Ecology - journals, Ecology - Poland - journals},
}