User talk:49.180.102.93

May 2020
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Andrew Cotter—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. Materialscientist (talk) 07:56, 20 May 2020 (UTC)
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Please do not add or change content, as you did at Andrew Cotter, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Girth Summit  (blether) 11:20, 20 May 2020 (UTC)
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