(3GdGdJRGe HGSJZdGd GdeHJcQGJ GdLOjOI (B/s - (3HQjQi, eMehO eNJGQ CMeOs (al-Qahirah : Dar al-Fikr al-'Arabi)
Thesis (Ph.D.)
Keywords: Patent laws and legislation; Patent laws and legislation -- Egypt