Netvouz / xaviermaths / folder / Measurement http://netvouz.com/xaviermaths/folder/4306140099506616185/Measurement?feed=rss xaviermaths's bookmarks in folder Measurement on Netvouz Britannica.com - History of Measuring TIme http://www.britannica.com/clockworks/startpage.html Clockworks: From Sundials to the Atomic Second Measurement xaviermaths Tue, 15 Jan 2008 11:08:32 GMT