(3GdYhGUe ef GdbhGUe aj KhHg GdLOjOs - (3Hf GdYQHj , GdbGVj CHh HcQs ((3HZGO (B:s (3OGQ GdKbGaI ,s, 1990)
Keywords: (3SjQI GdUMGHI hGdNdaGAs