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Overview
Astronomical Time Keeping
http://www.maa.mhn.de/Scholar/times.html
Earliest Clocks
http://physics.nist.gov/GenInt/Time/early.html
Science Resources by Subject: Horology: The Science of Time Keeping
http://can-do.com/science/horology.html
Timekeeping History
http://www.beaglesoft.com/maintimehistory.htm
Timekeeping: National Maritime Museum
http://www.nmm.ac.uk/collections/explore/index.cfm/category/timekeeping
Last Modified on April 5, 2012
