Home Ms. Diala Refaat Hamzeh Ms. Diala Refaat Hamzeh Author - Science International Board Sciences international board info.science.germany@gmail.comwww.science-board.de004915215284850The trainer has a certificateTRAINER TOTMs. Diala Refaat HamzehCertificate Number: 30-DR0002927call us Facebook Twitter Whatsapp Newer Older