User talk:180.190.67.137

March 2017
Hello, I'm Materialscientist. I wanted to let you know that one or more of your recent contributions to E-book have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Materialscientist (talk) 07:27, 20 March 2017 (UTC)
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