User talk:81.237.249.165

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) 02:25, 22 April 2017 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at North York. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you.  PK T (alk)  12:16, 2 August 2017 (UTC)