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Posted 12 years ago by boyt in category: interesting   Comments (0)


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Tom Wujec demos the 13th-century astrolabe
Posted 10 years ago by baffon in category: interesting   Comments (1)



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Posted 7 years ago by boyt in category: interesting   Comments (5)


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Emergency traveler's language guide to survive in Italy.
Posted 5 years ago by Snappo in category: interesting   Comments (1)