@misc{Maciejewska_Aleksandra_Free,
 author={Maciejewska, Aleksandra and Szadkowska-Stańczyk, Irena and Kondratowicz, Grzegorz},
 copyright={Maciejewska, Aleksandra},
 copyright={Szadkowska-Stańczyk, Irena},
 copyright={Kondratowicz, Grzegorz},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={pol, eng},
 type={serial - article},
 type={language document},
 title={Free crystalline silica: a comparison of methods for its determination in total dusts},
}