(3GdSQWGf (B: s (3EfSdGN GdMjhGfGJ GdbTQjI (B/ s - (3aJMj, JQGLjs ((3GdQjGV (B:s (3ecJHI GdYHjcGf,s, 1997)
Keywords: (3GdSQWGfs; (3GdMjhGfGJ GdeGFjIs; (3eQMdh fGTDhf UZGQ (B(10-14) (3SfIs