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Date: 2007-03-06 17:36:28Units of time Hipparchus Second Sexagesimal Degree Clock Hour Minute Sundial Measurement Orders of magnitude Horology | http://www.sciam.com/print_version.cfm?articleID=231B40A6-E7F2-Add to Reading ListSource URL: tf.boulder.nist.govDownload Document from Source WebsiteFile Size: 100,26 KBShare Document on Facebook |