"A 22-volume, highly illustrated, A-Z general encyclopedia for all ages, featuring sections on how to use World Book, other research aids, pronunciation key, a student guide to better writing, speaking, and research skills, and comprehensive index"

Provides information about the physical characteristics, habits, and behavior of beavers and such related rodents as flying squirrels, pocket gophers, mice, and lemmings.

"Information about some of the more important and interesting endangered animals of Australia, New Zealand, and the Pacific Islands, including the animal's common name, scientific name, and conservation status; also includes a map showing the range of each animal featured; and a glossary, additional resources, and an index"--