User talk:118.91.233.189
Hello, I'm Materialscientist. I noticed that you made a change to an article, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. Materialscientist (talk) 08:54, 13 November 2015 (UTC)
Please do not add or change content without citing a reliable source. Please review the guidelines at Wikipedia:Citing sources and take this opportunity to add references to the article. Thank you. Materialscientist (talk) 10:38, 13 November 2015 (UTC)
Please stop adding unsourced content. This contravenes Wikipedia's policy on verifiability. If you continue to do so, you may be blocked from editing Wikipedia. Materialscientist (talk) 06:17, 24 November 2015 (UTC)
{{unblock|reason=Your reason here ~~~~}}
. Materialscientist (talk) 06:17, 24 November 2015 (UTC)
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