Catégorie : - Science and nature
| LinksSort by : Alphabetical | 
| Abacus - [Read more]
http://www.abacushome.info
Information on the abacus, a tool which changed the course of technogical development. |
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| Earthquake Statistics - [Read more]
http://earthquakedb.com
Professional earthquake database with information about the currently known earthquakes in history, with RSS feeds and an earthquake search engine. |
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|  |  | Stats |  | - Categories : 299
- Links : 5680
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