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Talk:Sidney Dillon Ripley

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Didn't Dr. Ripley predict in 1970 that 75-85% of species would be extinct by 1995?12.159.72.39 (talk) 17:32, 28 April 2008 (UTC)[reply]

This article was edited as part of the SIA edit-a-thon!

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This article was created or edited as part of the Smithsonian Institution Archives Edit-a-thon! This event focused on Smithsonian history! Please assume good faith about the edits made, as the editor who contributed recently to this article may be a newbie! Thanks, and you can learn more about the event here!

Sarah (talk) 16:30, 26 May 2012 (UTC)[reply]