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This article links to one or more target anchors that no longer exist.
[[Special relativity#Mass, momentum, and energy|energy and momentum]] The anchor (#Mass, momentum, and energy) is no longer available because it was deleted by a user before.
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I'm removing the link to Publicly Released tests. It's now March, 2008, and they still don't work (original comment about the link not working was in 2006. It's time to go.) —Preceding unsigned comment added by 128.198.32.19 (talk) 17:20, 18 March 2008 (UTC)[reply]