(3hLgJfG fXQ Mhd GdJbdHGJ aj CSYGQ GdfaW (B/s - (3NGQJhcha,j, s; (3ehSis ((3OeTb (B:s (3OGQ GdLdjd ,s, 1990)
Keywords: (3JbdHGJ CSYGQ s; (3faW s; (3hLgJfGs