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- 03:49, 29 November 2010 (diff | hist) . . (0) . . N File:Abacus5.jpg (current)
- 03:49, 29 November 2010 (diff | hist) . . (+20) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:48, 29 November 2010 (diff | hist) . . (+580) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:47, 29 November 2010 (diff | hist) . . (0) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:46, 29 November 2010 (diff | hist) . . (+1) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:46, 29 November 2010 (diff | hist) . . (+66) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:46, 29 November 2010 (diff | hist) . . (0) . . N File:Abacus4.jpg (current)
- 03:45, 29 November 2010 (diff | hist) . . (+22) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:44, 29 November 2010 (diff | hist) . . (+514) . . Abacus (→Tell me about Abacus: how to use it?)
- 03:44, 29 November 2010 (diff | hist) . . (+44) . . Abacus (→How it works)
- 03:44, 29 November 2010 (diff | hist) . . (+21) . . Abacus
- 03:42, 29 November 2010 (diff | hist) . . (+6) . . Abacus (→A historical sketch on the Abacus)
- 03:42, 29 November 2010 (diff | hist) . . (+47) . . Abacus (→A historical sketch on the Abacus)
- 03:40, 29 November 2010 (diff | hist) . . (+6) . . Abacus (→A historical sketch on the Abacus)
- 03:39, 29 November 2010 (diff | hist) . . (-6) . . Abacus (→A historical sketch on the Abacus)
- 03:39, 29 November 2010 (diff | hist) . . (+6) . . Abacus (→A historical sketch on the Abacus)
- 03:39, 29 November 2010 (diff | hist) . . (-2) . . Abacus (→A historical sketch on the Abacus)
- 03:38, 29 November 2010 (diff | hist) . . (+118) . . Abacus (→A historical sketch on the Abacus)
- 03:38, 29 November 2010 (diff | hist) . . (+22) . . Abacus (→A historical sketch on the Abacus)
- 03:36, 29 November 2010 (diff | hist) . . (-145) . . Abacus (→A historical sketch on the Abacus)
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