User talk:2600:100F:B02E:9977:D1E7:31D8:82D2:675

April 2020
Hello, I'm Materialscientist. I noticed that you made a change to an article, Vladimir Tushinsky, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Materialscientist (talk) 21:45, 21 April 2020 (UTC)
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