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World Book Encyclopedia
http://www.worldbook.com/ -
The Probert Encyclopaedia
http://www.probert-encyclopaedia.co.uk/ -
Encyberpedia
http://www.encyberpedia.com/cyberlinks/links/index.html -
Classic Encyclopedia
http://1911encyclopedia.org/ -
How Stuff Works
http://www.howstuffworks.com/ -
HighBeam Encyclopedia
http://www.encyclopedia.com/ -
Wikinfo
http://www.wikinfo.org/ -
Online Encyclopedia
http://encyclopedia.jrank.org/ -
Encyclopaedia Britannica Online
http://www.britannica.com/ -
Nuttall Encyclopędia of General Knowledge
http://www.fromoldbooks.org/Wood-NuttallEncyclopaedia/ -
Britannica Concise
http://concise.britannica.com/ -
Bartleby.com
http://www.bartleby.com/ -
MSN Encarta Encyclopedia
http://encarta.msn.com/ -
Hutchinson Encyclopedia
http://encyclopedia.farlex.com/ -
Simple English Wikipedia
http://simple.wikipedia.org/ -
Information Please
http://www.infoplease.com/ -
Encyclopedia Smithsonian
http://www.si.edu/Encyclopedia_SI/ -
Knol
http://knol.google.com/ -
Wikipedia
http://www.wikipedia.org