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polar motion
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polar motion: References & Edit History

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Article History

Type Description Contributor Date
Invalidated site: International Earth rotation and Reference systems Service - Polar motion. Jan 21, 2018
Added new Web site: Natural Resources Canada - Canadian Spatial Reference System - VLBI - Polar Motion. May 02, 2008
Added new Web site: International Earth rotation and Reference systems Service - Polar motion. May 02, 2008
Article added to new online database. Jul 20, 1998
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