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A Walk Through Time
Link Details for:
A Walk Through Time
Link Title:
A Walk Through Time
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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