describe an invention that appeared before computer

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describe an invention that appeared before computer.

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Thu, 02/26/2015 - 01:29 Sumitarani 80.00 Check this speaking
Sat, 10/18/2014 - 14:33 salatin 65.00 Check this speaking
Sat, 12/06/2014 - 10:23 VertFeuille 60.00 Check this speaking
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