@misc{_Kurnik._1941,
 copyright={Public Domain},
 howpublished={online},
 year={1941},
 language={ger},
 title={Kurnik. April 1941},
 URL={http://rcin.org.pl/Content/130870/PDF/KOR001_163496_1941.pdf},
 keywords={climatology, meteorology, meteorological data, weather station},
}