User talk:A-ng2020

October 2020
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. 2601:188:180:B8E0:65F5:930C:B0B2:CD63 (talk) 17:42, 26 October 2020 (UTC)

Please do not add unsourced or original content. Doing so violates Wikipedia's verifiability policy. If you continue to do so, you will be blocked from editing Wikipedia. Materialscientist (talk) 17:49, 26 October 2020 (UTC)