(3GdfXQGJ s - (3eUWai dWaj GdefadhWj (B((3JbOje hJYdjb(B: (3eMeO aJMj CHh HcQ(B)s ((3GdbGgQIs (3GdOGQ GdeUQjI GddHfGfjIs, 2012)
Keywords: (3GdCOH GdYQHj GdMOjK ebGdGJ(B; (3GdefadhWj CYeGds