Engel, H. O. (1990). Academic occupational medicine at the crossroads.
Citação norma ChicagoEngel, H O. Academic Occupational Medicine At the Crossroads. 1990.
Deismireacht MLAEngel, H O. Academic Occupational Medicine At the Crossroads. 1990.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.