(3bGfhf Qbe (B35 (3dSfI (B1976 :s (3HEUOGQ bGfhf GdfbGHGJ GdYeGdjI habkG dBNQ JYOjdGJg (B((3eJVefkG GdbQGQGJ GdJfajPjI dCMcGeg(B) /s - (3eUQ(B.s ((3GdbGgQI (B:s (3GdgjFI GdYGeI dTFhf GdeWGHY GdCejQjI,s, 1993)
Keywords: (3JTQjYGJ hbhGfjfs; (3GdfbGHGJ GdYeGdjI(B.s