World Book is the leader when it comes to affordable, comprehensive encyclopedias, and is committed to providing timely, thorough and accurate information for its readers. More than a quarter of World Book encyclopedia content is updated each year - much more than any other encyclopedia in publication.

In all of World Book encyclopedias and publications, a wide variety of visual aids clarifies meaning and reinforces learning. Photographs, drawings, paintings, maps, diagrams, charts, and graphs make information come alive. Not all encyclopedias are the same ~ try World Book encyclopedias and experience the difference.

World Book presents a universe of information. From A to Z, the world of knowledge unfolds. World Book articles are written clearly. They're concise and interesting...packed with facts instead of adjectives. And because each article is tightly written, there are more of them in each volume.

• Authored and edited by 3,700 experts
• Checked and rechecked
• Updated more than any other reference source
• Straightforward and understandable to students of all ages and levels.

Discover the World Book difference at the World Book website.