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SENCOR SEC 180 school calculator, 56 scientific functions, 10-digit LCD display, trigonometric and hyperbolic functions, logarithmic and exponential function, black, calculator : Amazon.de: Stationery & Office Supplies
Niji Digit 61825 Scientific Calculator 10 Digits 7.5 x 13.5 cm : Amazon.de: Stationery & Office Supplies
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