As the first comprehensive reference for the eye, its support structures, diseases, and treatments, Encyclopedia of the Eye is an important resource for all vis

Curious kids want to know everything about their planet. This lively encyclopedia offers a wealth of comprehensive, easy-to-follow insight into our planet in fu

The Periodic Table Book is the perfect visual guide to the chemical elements that make up our world. This eye-catching encyclopedia takes children on a visual t

Explore the lives of America's 45 presidents, as well as notable first ladies, famous speeches, and major constitutional events, with The Presidents Visual Ency