User talk:180.191.90.42

October 2012
Hello, I'm Tobias Bergemann. I wanted to let you know that I undid one or more of your recent contributions to Conceptual model because it didn't appear constructive. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! Tobias Bergemann (talk) 12:52, 1 October 2012 (UTC)
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