Talk:Rotation in office

As of 12/30/07 this article is a modified and condensed version of the section on rotation in office in chapter six of my online book, Treatise on Twelve Lights. I hereby grant permission to Wikipedia to incorporate the indicated passages.

Previously the Wikipedia article consisted, I believe, of just a paragraph excerpted from the Grolier’s Multimedia Encyclopedia.Elburts (talk) 05:01, 31 December 2007 (UTC)