محاضرات قسم علوم البيئة/ المرحلة الرابعة/ الفصل الدراسي الاول/ صحة وسلامة 

Environmental Health and safety lec, (7)

Environmental Health and safety lec, (6)

Environmental Health and safety lec, (5)

Environmental Health and safety lec, (4)

Environmental Health and safety lec, (3)

Environmental Health and safety lec, (2)

Environmental Health and safety lec, (1)