 Category: Reference
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1. Eb.com
Start smart with Britannica's award-winning online reference services. With 3 editions to serve the unique needs of schools, colleges, and public libraries, Britannica Online has high quality research and learning materials for all learners. The 32-volume
http://www.eb.com
3. Britannica.com
Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos and photos along with access to the Britannica Student Encyclopedia, Britannica Concise Encyclopedia, and Merriam-Webster's
http://www.britannica.com
4. Encarta.msn.com
MSN home Mail My MSN Sign in encarta greeting cards more Hotmail MSN Directory Air Tickets/Travel Lifestyle Maps & Directions Yellow Pages encarta ® Home Encyclopedia Dictionary Atlas K-12 Success College & Grad School Adult Learning Quizzes More
http://encarta.msn.com
6. Worldbook.com
World Book Encyclopedias: The #1 selling print Encyclopedia in the world, and World Book Online Encyclopedia making the very best reference materials more accessible than ever.
http://www.worldbook.com
7. Eaa.crcpress.com
Encyclopedia of Astronomy and Astrophysics Home Advanced search Browse Search history Subscription information About EAA Links Welcome to the Encyclopedia of Astronomy and Astrophysics This unique resource covers the entire field of astronomy and
http://eaa.crcpress.com
13. Concise.britannica.com
Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos and photos along with access to the Britannica Student Encyclopedia, Britannica Concise Encyclopedia, and Merriam-Webster's
http://concise.britannica.com
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