NSPS -521 - ﺔﺨﺴﻧ ﻞﻀﻓﺃ ، ﺓﺯﺎﺘﻤﻣ ﺔﻤﻠﻌﻣ :ﺓﺩﺎﻴﻘﻟﺍﻭ ﺔﻤﻜﺤﻟﺍﻭ ﺔﻄﻠﺴﻟﺍ