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Encyclopedias
Encyclopaedia Britannica Online
- http://www.britannica.com/
PR: 8
Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Free trial. - [
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How Stuff Works
- http://www.howstuffworks.com/
PR: 7
Articles explain how hundreds of things work, from elements of the human body to space-age technology. - [
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World Book Encyclopedia
- http://www.worldbook.com/
PR: 8
Publisher site promoting sales of bound copies and offering link to online version - [
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1911 Encyclopedia Britannica
- http://encyclopedia.jrank.org/
PR: 7
Offers the 11th Edition Encyclopedia Britannica which is now in the public domain. All articles are searchable and alphabetized. - [
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Wikipedia
- http://en.wikipedia.org/
PR: 9
A free encyclopedia built collaboratively using Wiki software. - [
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Encyclopedia.com from Electric Library
- http://www.encyclopedia.com/
PR: 8
Free resource offers more than 50,000 concise articles. - [
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Science, health, spirituality articles
- http://www.999answers.com
PR: 3
Articles on business or society - technology or biology - psichology or spirituality! - [
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