Casio FX-115ES Scientific Calculator N78 Natural Display Two Way Power | eBay
Casio fx-300MS PLUS 2 Teacher Pack - Large Display, Dual Power, Hard Case - 2 Line(s) - 10 Digits - Battery/Solar Powered - 0.4" x 3" x 6.4" - Black - 1 Each - Filo CleanTech
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