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Casio FX-991DE Scientific Calculator
Casio-FX-991DE-Plus-Scientific-School-Calculator-Casio-FX-991DE-PLUS-The-Casio-FX-991DE-Plus-is-an-easy-to-use-technical-and-scientific-calculator-with-a-large-range-of-functions-The-Natural-display-lets-you-enter-and-display-fractions-square-roots-and-other-numeric-expressions-in-the-same-way-as-they-appear-in-your-textbook-The-calculator-is-powered-by-a-via-solar-cell-and-a-back-up-battery-Casio-FX-991DE-Scientific-Calculator
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