User talk:Hnedkovl

September 2015
Hello, I'm Melmann. I noticed that you made a change to an article, Work (thermodynamics), but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source 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. Thanks.  Melmann (talk) 11:35, 3 September 2015 (UTC)