The ultimate book of knowledge for kids aged 7 to 9, this thorough children's encyclopedia contains all the homework answers your kids will need, explained clea

"With more than 100 experts in their fields, including space, animals, wars, mummies, brain science, and many, many more!"

This stimulating and comprehensive encyclopedia for children ages 8-12 provides answers to all the questions kids love to ask. Each chapter is jam-packed with m

An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students.

Full-color maps, photographs, and paintings illustrate a comprehensive reference guide to American history.