User talk:Ernö Polgar

September 2014
Hello, I'm Materialscientist. I wanted to let you know that I undid one of your recent contributions, such as the one you made with this edit to Yu Kil-chun, because it didn’t appear constructive to me. 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) 08:08, 2 September 2014 (UTC)