(3eHGOF Yde GdGbJUGO (B/s - (3TYHGf QGaJ eMeO MeGOs ((3ZjQ eMOOs (3ZjQ eMOOs, 2007)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs