(3JCKjQ GdCReGJ GdfbOjI GdGfLdjRjI (B/s - (3YHOGdMcje GdQaGYjs; (3LGeYI GdbGgQIs (3cdjI GdMbhbs ((3GdbGgQI(B:s (3cdjI GdMbhb (B- (3LGeYI GdbGgQI ,s, 1931)
1
Keywords: (3bGfhf LQjTGes; (3GdfbhO GdPgHjI s; (3GdCReGJ GdfbOjIs; (3GdfXGe GdfbOj GdeUQjs; (3bGYOI GdPgHs