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Text and/or other creative content from Index number was copied or moved into Index (economics) with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

When the definition of index number was first created, the editor gave his source. [1] The definition has been modified, but it's not clear what new source is being used. Please use footnotes to provide citations for text so that the information can be verified. Thanks! -- Foggy Morning ( talk) 23:11, 23 January 2008 (UTC) reply

Thanks for pointing out the need to update the references. I've listed a couple of new sources. Cournot ( talk) 00:27, 24 January 2008 (UTC) reply

Thanks! Can you provide ISBN numbers for the books? -- Foggy Morning ( talk) 02:52, 24 January 2008 (UTC) reply