Amazon.com : Scientific Calculator with Graph Functions for College and High School Students, Engineering, Advanced Mathematics, Calculus, Algebra, Geometery, Trigonometry, Statistics, Physics, Chemistry - Black : Office Products
Mr. Pen- Scientific Calculator, 2 Line - Mr. Pen Store
International Chemistry Olympiad - IChO - For the competition purposes, all the competitors will be given a calculator Casio fx-991EX. The manual for the calculator can be downloaded from the following link:
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