Hesham Mohamed Aziz <br/><br/>
Evaluation of respiratory system affection due to chronic exposure to portland cement dust /  
 تقييم التأثير على الجهاز التنفسى نتيجة التعرض المزمن لغبار الاسمنت البورتلاندى 
Hesham Mohamed Aziz ; Supervised Yehia A. Zakaria , Frederic B. Ananian , Noha M. Hegazy 
 - Cairo :   Hesham Mohamed Aziz ,   1997 
 - 242 Leaves :   charts , photographs ;   30cm 
<br/><br/>Thesis(Ph.D.) - Cairo University - Faculty of Medicine - Department of Industrial Medicine and Occupational Diseases