(3gfOSI GdfHVGJ hJTcjd GdehLGJ GdQbejI hGdJfGXQjI (B/ s - (3eXgQ WGjds ([S.N] : (3OGQ GdQGJH GdLGeYjI , s, 1991)
Keywords: (3GdOhGFQ GdGdcJQhfjIs; (3GdOhGFQ GdcgQHGFjIs; (3GdJQGfRSJhQ (B- (3OhGFQs; (3GdGdcJQhfjGJs