(3GOH GdQMdGJ (B:s (3OQGSI JMdjdjI aj efXhQ GfKhLQGaj (B.s - (3agje , MSjf eMeOs ((3GdchjJ (B:s (3eWGHY GdQSGdI ,s, 1989)
Keywords: (3GOGH GdSaQ (B.s