(3JGQjN GdcJGHI GdJGQjNjI (B/ s - (3SYjO YHOGdaJGM YGThQs; (3HGQfR, gGQi GdeQs; (3eMeO YHOGdQMef HQL(B((3eJQLe(B)s ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1987)
Keywords: (3adSaIs; (3GdMVGQIs; (3GdJGQjNs; (3GdGLJeGYs; (3GdfXe GdSjGSjIs; (3Ydhe GdGfSGfs