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Provides complete text of Encyclopaedia Britannica with search capabilities.
http://www.britannica.com/
PageRank: Not available
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Free resource offers more than 50,000 concise articles.
http://www.encyclopedia.com/
PageRank: Not available
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Detailed information on arts, business, cuisine, sports, travel, gardening and recreation.
http://www.encyclozine.com/
PageRank: Not available
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Articles explain how hundreds of things work, from elements of the human body to space-age technology.
http://www.howstuffworks.com/
PageRank: Not available
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A volunteer-run open content encyclopedia, inspired by the Open Directory Project.
http://www.open-site.org/
PageRank: Not available
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Offers in-depth information on a variety of subjects and educational activities for children.
http://www.worldbook.com/
PageRank: Not available
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