User talk:HeidelbergTurino

June 2013
Hello, I'm Biker Biker. I noticed that you made a change to an article, List of German inventions and discoveries, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation 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. Thank you. Biker Biker (talk) 00:23, 12 June 2013 (UTC)