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Amazon.com : TI-89 Titanium Programmable Graphing Calculator, Sold as 1 Each : Office Products
Amazon.com : co2CREA Hard Case Compatible with Texas Instruments TI-84 Plus CE/TI-84 Plus/TI-Nspire CX II CAS/TI-Nspire CX II/TI-83 Plus/TI-89 Titanium/ TI-85 / TI-86 Color Graphing Calculator, Purple : Office Products