(3GdbfOS (B: (3HfGA GdSOhO (B/ s - (3aJMj, JQGLjs ((3GdQjGV (B:s (3ecJHI GdYHjcGf,s, 1997)
Keywords: (3GdbfGOSs; (3GdbhGQV (B( (3QJHI (B)s; (3eQMdI fGTDhf UZGQ(B(10-14) (3SfIs