User talk:Vinaygupta1752000

Hello, I'm Materialscientist. I noticed that you added or changed content in an article, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at the tutorial on citing sources, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. Materialscientist (talk) 16:27, 1 March 2020 (UTC)

Vinaygupta1752000, you are invited to the Teahouse!
Please do not add or change content without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Materialscientist (talk) 08:11, 6 April 2020 (UTC)