@misc{Maciejewska_Aleksandra_Backgrounds,
 author={Maciejewska, Aleksandra},
 copyright={Nofer Institute of Occupational Medicine},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={pol, eng},
 title={Backgrounds for assessing occupational exposure to crystalline silica dust in Poland and worldwide},
 type={serial - article},
 type={language document},
}