(3Gdjef GdKhQI hGdMQH MJi YGe (B1970 / s - (3GOLGQ GhHGdGfSs; (3YHOGdNGdb eMeO dGTjf (B((3eJQLe(B)s ([S.N] : (3ecJHI eOHhdi , s, 1990)
Keywords: (3GdYUQ GdMOjKs; (3JGQjNs; (3Gdjefs; (3YUQ GdGFegs