User talk:HELLO WORLD0905097

May 2017
Hello, I'm Andy Dingley. An edit that you recently made to Perfect gas seemed to be a test and has been removed. If you want more practice editing, 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. Thanks! Andy Dingley (talk) 16:31, 23 May 2017 (UTC)