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Amazon.com : Texas Instruments Ti Nspire CX II CAS Graphing Calculator + Guerrilla Zipper Case + Essential Graphing Calculator Accessory Kit, Black (Blackk) : Office Products
Texas Instruments Nspire CX II CAS Graphing Calculator Rechargeable Computer Algebra System CAS Battery Powered 2 x 7.3 x 11.8 Gray 1 Each - Office Depot
TI-Nspire™ CX CAS Graphing Calculator | Texas Instruments