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| ID: | 11221 | | Title: | Abacus - http://www.abacushome.info | | Pagerank: | N/A | | Description: | Information on the abacus, a tool which changed the course of technogical development. | | Category: | | | Link Owner: | Mike Procter | | Date Added: | February 25, 2008 05:35:52 PM | | Number Hits: | 0 | | |
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