File talk:Supply and demand network (en).png
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I am the author of the publication, were the image first appeared and uploaded it to Wikimedia Commons. Scmresearcher (talk) 15:29, 20 July 2011 (UTC)
I am the author of the publication, were the image first appeared and uploaded it to Wikimedia Commons. Scmresearcher (talk) 15:29, 20 July 2011 (UTC)[reply]
.png#c-Scmresearcher-2011-07-20T15:29:00.000Z){kind=link}
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