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An international project to create a universal, multilingual open content encyclopedia.
http://www.wikinfo.org/
PageRank: Not available
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In this English version, started in 2001, we are currently working on 681,092 articles.
http://en.wikipedia.org/
PageRank: Not available
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The main page of the free community-built encyclopedia with thousands of articles on topics from A to Z. Available in dozens of languages.
http://www.wikipedia.org/
PageRank: Not available
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Search the WordIQ online dictionary definitions and encyclopedia. Get the defintions of any word instantly.
PageRank: Not available
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Offers in-depth information on a variety of subjects. Includes resources for parents and teachers, features on current events, educational activities for children, and World Book product information.
http://www.worldbook.com/
PageRank: Not available
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Online reference source--containing every article from the 22-volume print set plus thousands more.
http://www.worldbookonline.com/
PageRank: Not available
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Portal to a selection of reference tools.
http://education.yahoo.com/
PageRank: Not available
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