(3bQGQ QFjS LeghQjI eUQ GdYQHjI HGdbGfhf Qbe (B186 (3dSfI (B1986 :s (3HEUOGQ bGfhf JfXje GdGYaGAGJ GdLeQcjI hdGFMJg GdJfajPjI (B/s - (3eUQ(B.s ((3GdbGgQI (B:s (3GdgjFI GdYGeI dTFhf GdeWGHY GdCejQjI,s, 1993)
Keywords: (3JTQjYGJ hbhGfjfs; (3GdLeGQc(B.s