(3fXQjI GdYbO GdOhdj GdWdjb Hjf GdbGfhf GdOhdj GdNGU h GdbGfhf GdJLGQI GdOhdjI(B:s (3OQGSI JCUjdjI EfJbGOjI(B/s (3GdLRA GdChd(B,s - (3CMeO YHOGdcQje SdGeIs ((3GdbGgQI(B:s (3OGQ GdfgVI GdYQHjI(B,s, 1989)
(3GdfU CZdHg HGddZI GdYQHjI eY HYV GdfUhU GdaQfSjIs
Keywords: (3GdbGfhf GdOhdj GdYGes; (3GdbGfhf GdOhdj GdJLGQjs