Ti 89 Guidebook Paperback – January 1, 1998by Texas Instrument Staff (Editor) 5.14Texas Instruments TI-89 Guidebook 1998 by Texas Instruments Incorporated $39.95PriceFormat*SelectQuantity*Out of StockNotify When AvailableProduct DetailsPublisher : Texas Instruments (January 1, 1998) Language : English Paperback : 557 pages Item Weight : 1 pounds