User talk:2003:DA:3F38:8300:3D06:862E:BC2:76AF

Hello, I'm Materialscientist. I noticed that you added or changed content in 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. You can have a look at the tutorial on citing sources. If you think I made a mistake, you can leave me a message on my talk page. Thank you. Materialscientist (talk) 09:37, 6 September 2020 (UTC)[reply]

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