Talk:GRS 80

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What reference system did GRS80 replace? RJFJR 21:21, 21 September 2007 (UTC)

[edit] Geodesy

Almost half this article is taken up by a definition/explanation of geodesy and the purpose of a reference ellipsoid. Given that boththese subjects have their own articles, and that this information isn't repeated for every other reference ellipsoid (WGS 84, Bessel 1841, etc), should this really be here? Wardog (talk) 13:47, 10 March 2008 (UTC)