World Book Kids
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http://worldbookonline.com/kids/Home
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Everyday Mysteries: Fun Science Facts from the Library of Congress
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Public Library of Science
Nonprofit organization of scientists and physicians committed to making the ... PLoS is a nonprofit organization of scientists and physicians committed to ...
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ERIC - Education Resources Information Center
National information system providing users with ready access to an extensive body of education-related literature. Full-text articles and monographs can also be purchased online.
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Questia Online Library - New Search
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ISI Web of Knowledge
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CiteULike: A free online service to organise your academic papers
Citeulike SVN Server. To check out the source code: svn co http://svn.citeulike.org/svn citeulike ...
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Encyclopedia Home — Infoplease.com
A current and comprehensive encyclopedia covering all the major branches of knowledge from astrophysics to Zimbabwe.
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LoveToKnow 1911
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Directory of open access journals
Covers free, full text, quality controlled scientific and scholarly journals. ... Support the development and operation of DOAJ. ...
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Bartleby.com: Great Books Online -- Encyclopedia, Dictionary, Thesaurus and hundreds more
Publishes the classics of literature, nonfiction, and reference books free of charge for the home, classroom, and desktop.
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