Calculadora Científica Casio Fx-991 Es Plus Com 417 Funções
Casio FX-991SPX II Scientific Calculator, Recommended for Spanish and Portuguese CV, 576 Functions, Solar Powered and Grey/White : Casio: Amazon.de: Stationery & Office Supplies
Casio FX-991EX Engenharia/Calculadora Científica, Preto, 3 x 6.5 x