(3GdfXe GdSjGSjI aj EaQjbjG (B: s (3JWhQgG h EJLGggG fMh GdhMOI (B/ s - (3ejNGFjd, fRjg fUjas ((3GdbGgQI (B:s (3OGQ GdcGJH GdYQHj,s, 1967)
Keywords: (3EaQjbjGs; (3JGQjN EaQjbjGs; (3GdJGQjN GdSjGSjs