User talk:86.159.226.198

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) 16:27, 9 December 2020 (UTC)

December 2020
This is your only warning; if you vandalize Wikipedia again, you may be blocked from editing without further notice. CLCStudent (talk) 16:33, 9 December 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.