(3fUhU eNJGQI ef cfjSI GdeTQb (B( (3GdbQhf (B11-14 ) /s - (3GdSGdSj , LGf eGQjG LGfJSGs ((3HZOGO(B:s (3eWHYI GdWja ,s, 2000)
Keywords: (3GdcfGFS GdGQKhOcSjI s