(3GdbOS aj GdJGQjN (B/ s - (3GdYSdj, cGed Lejds ((3YeGf (B:s (3GdLGeYI GdCQOfjI (B- (3YeGOI GdHMK GdYdej,s, 1992)
Keywords: (3GdbOSs; (3GdJGQjNs