(3GdJMdjd GdfbOj (B/s - (3RcQjG CMeO fUQ s ((3eUQ (B:s (3OGQ GdcJGH GdYQHj,s, 1958)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs