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Casio fx-300ES PLUS Scientific Calculator; SAT Compatible; Natural Textbook Display; Math, Trigonometry, Statistics, Algebra, Geometry and Physics Functions; Comes with Slide-on Hard Case; Black
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Amazon.com : Casio FX-991ES Plus Scientific Calculator Fx 991 Es - New & Sealed ship to world wide : Office Products
Casio FX-991ES Plus-2 Scientific Calculator
Amazon.com : Casio FX-991ES Plus Scientific Calculator Fx 991 Es - New & Sealed ship to world wide : Office Products