Encyclopedia
www.encyclopedia.com
[weblink] Submitted by Michael on 3. October 2009 - 0:09 (3. October 2009 - 0:09)
Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with millions of articles in our FREE, online library.
WolframAlpha
[weblink] Submitted by Michael on 17. May 2009 - 5:50 (17. May 2009 - 5:50)
Computational knowledge engine
Wikipedia
[weblink] Submitted by Michael on 17. June 2008 - 22:38 (19. January 2009 - 7:41)
Wikipedia, the free encyclopedia
