Revision history of "User:Mastermindabacus"

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  • (cur | prev) 09:28, 12 December 2012‎ Mastermindabacus (talk | contribs)‎ . . (2,067 bytes) (+2,067)‎ . . (Created page with "A device named Abacus has been around for more than 3000 years and has played a significant role in the development our modern calculating our system. It is such a remarkable ...")
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