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A Walk Through Time

  Link Details for: A Walk Through Time
Link Title: A Walk Through Time Open in a new window
Link URL: http://physics.nist.gov/GenInt/Time/
Link Details: An illustrated history of timekeeping from ancient times to the present. A presentation of the National Institute for Standards and Technology Physics Lab.
Category: Top : Regional : North_America : United_States : Government : Reference : Calendars
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A Walk Through Time