@misc{_Acta_1971,
 volume={Vol. 13},
 number={4},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Acta Hydrobiologica},
 howpublished={online},
 year={1971},
 publisher={Laboratory of Water Biology of the Polish Academy of Sciences},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={ger},
 title={Acta Hydrobiologica Vol. 13 Fasc. 4 (1971)},
 type={Text},
}