Netvouz / xaviermaths / folder / Estimation http://netvouz.com/xaviermaths/folder/755617608200315948/Investigations+Estimation?feed=rss xaviermaths's bookmarks in folder Estimation on Netvouz A View from the Back of the Envelope http://www.vendian.org/envelope/ Estimation ideas ... Investigations > Estimation xaviermaths Mon, 14 Jan 2008 06:24:02 GMT Fermi Problems http://www.vendian.org/envelope/dir0/fermi_questions.html Fermi Problem Ideas ... Investigations > Estimation xaviermaths Mon, 14 Jan 2008 06:22:31 GMT