(3GdYdGbGJ GdaQfSjI GdYQHjI ef NdGd ehba aQfSG ef GdYfGUQ GdCSGSjI ddbVjI GdadSWjfjI (B/ s - (3fhad, CMeO SYjOs ((3GdchjJ (B:s (3cGXeI ddfTQ h GdJQLeI h GdJhRjY,s, 1984)
Keywords: (3aQfSGs; (3GdYdGbGJ GdOhdjIs; (3GdHdOGf GdYQHjIs