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First Author:
 
Hassan Belkacem Ghassan
USMBA, Morocco and KFU, Saudi Arabia
h_ghassan@yahoo.fr
 
5 street Imam chatibi la villette
Casablanca, Morocco
 
 
 

Second Author:

Mohammed Souissi
UM5, EMI, Rabat Agdal, Morocco
msouissi@emi.ac.ma
 
Rabat and fes, Morocco
 
 
 

Third Author:

Mohammed Kbiri Alaoui
Ministry of employment and UM5, EMI, Rabat, Morocco
mka_la@yahoo.fr
 
Rabat, Morocco