(3UfY GdbQGQ aj EOGQI GdCReI (B/s - (3GMeO Jhajbs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI(B,s, 2007)
. 281-261 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU CZdHg HGddZI GdYQHjI eY HYV GdfUhU GdEfLdjRjIs
Keywords: (3fXQjI GdXQha GdGSJKfGFjIs; (3GdbQGQJ GdEOGQjIs