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Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

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Encyclopedia Center carries a wide variety of both general and topical encyclopedias from the top publishers you know and trust.

Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

View lesson plans, booklists, and educational products for children grades Pre-K to 12. Classroom materials include online activities for kids, printables, and author interviews. Connect with other educators.

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