A Graphing Calculator Manual for Finite Mathematics: With Text, Examples, and Exercises for the TI-82 (including procedures for the TI-81/85 and the CASIO 7700G): Seaver, Robert E: 9780534935184: Amazon.com: Books
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Texas Instruments ti-81 Plus Graphing Calculator y ti-81 Manual del Usuario (CD) : Amazon.com.mx: Oficina y papelería