(3GOH GdQMdGJ (B:s (3OQGSI JMdjdjI ef efXhQ GfKhLQGaj (B/s - (3agje ,MSjf eMeO s ((3GdchjJ (B:s (3eWGHY GdQSGdI ,s, 1989)
Keywords: (3GOH GdSaQ s