(3GdJhMjO (B:s (3GdGeJGY h GdeDGfSI (B3 /s - (3GdJhMjOj, GHh MjGfs; (3fhjhGJ(B;(3HdbGjOs ((3GdLRGFQ (B:s (3ehae ddfTQh GdJhRjY ,s, 1989)
Keywords: (3GdESdGes; (3GdJhMjOs