@misc{Pieczyński_Eligiusz_Numbers,_1961,
 author={Pieczyński, Eligiusz},
 volume={9},
 editor={Polska Akademia Nauk. Komitet Ekologiczny},
 number={13},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 journal={Ekologia Polska. Seria A},
 howpublished={online},
 year={1961},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 type={Text},
 title={Numbers, sex ratio, and fecundity of several species of water mites (Hydracarina) of Mikołajskie Lake},
 URL={http://rcin.org.pl/miiz/Content/67972/PDF/WA058_85908_P2840-T9_Eko-Pol-A-Nr-13.pdf},
 keywords={water mites, Poland, Mikołajskie Lake, Hydracarina},
}