@misc{_Problemy_1973,
 editor={Żurawski, Michał (1927–1985). Oprac.},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Dokumentacja Geograficzna},
 howpublished={online},
 year={1973},
 publisher={IGiPZ PAN},
 language={pol},
 language={rus},
 language={eng},
 title={Problemy wodne miasta Kalisza : opracowanie studialne = Problems of water-supply of Kalisz},
 type={Text},
 URL={http://www.rcin.org.pl/igipz/Content/27603/PDF/WA51_39895_r1973-z-spec_Dokumentacja-Geogr.pdf},
 keywords={hydrology, water management, Kalisz},
}