@misc{Mikołajczyk_Urszula_Exposure,
 author={Mikołajczyk, Urszula and Bujak-Pietrek, Stella and Szadkowska-Stańczyk, Irena},
 copyright={Nofer Institute of Occupational Medicine},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={pol, eng},
 type={serial - article},
 type={language document},
 title={Exposure to silica dust in coal-mining. Analysis based on measurements made by industrial hygiene laboratories in Poland, 2001-2005.},
}