Libri di calculatrices

3 libri in questo genere

The calculator puzzle book by Claude Birtwistle - Book Cover

The calculator puzzle book

Claude Birtwistle

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The ten-key touch system on modern calculators by Gilbert Eckern - Book Cover

The ten-key touch system on modern calculators

Gilbert Eckern

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Games Calculators Play by Wallace Judd - Book Cover

Games Calculators Play

Wallace Judd

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