User talk:Zyxzupf

December 2012
Please refrain from making unconstructive edits to Wikipedia, as you did at Sustainability metrics and indices. Your edits appear to constitute vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Thank you. Please do not delete referenced material without some sort of explanation. -- Alan Liefting (talk - contribs) 07:06, 22 December 2012 (UTC) Hi Alan, I'm sorry that my changes appeared to constitute vandalism. I merely wished to delete references to works that I feel have little or nothing to do with the claims made in the text. I have read these articles and they are at best tangential. best wishes for the new year.