@misc{el_Batawi_M._A._Occupational,
 author={el Batawi, M. A.},
 copyright={el Batawi, M. A.},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={eng},
 type={serial - article},
 type={language document},
 title={Occupational health sciences in the 1990's},
}