(3bGfhf Qbe (B20 (3dSfI (B1936 (3HTCf GdeWHhYGJ hePcQGJg GdEjVGMjI (B/s - (3eUQ(B.s ((3GdbGgQI (B:s (3GdgjFI GdYGeI dTFhf GdeWGHY GdCejQjI,s, 1984)
Keywords: (3JTQjYGJ hbhGfjfs; (3GdeWHhYGJ (B.s