User talk:990,942020&dq

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) 12:15, 2 May 2017 (UTC)

You have been blocked temporarily from editing for abuse of editing privileges. Once the block has expired, you are welcome to make useful contributions. If you think there are good reasons why you should be unblocked, you may request an unblock by first reading the guide to appealing blocks, then adding the following text to the bottom of your talk page:. Materialscientist (talk) 12:15, 2 May 2017 (UTC)