World Book Encyclopedia 2015

Published since 1917, The World Book Encyclopedia maintains a rigorous annual revision process where nearly one-third of its contents are revisited, revised, and renewed to make it the most current print encyclopedia on the market today. 22 volumes including a Research Guide and Index More than 25,000 photographs, maps, and illustrations Engages more than 4,000 scholars and experts as contributors, reviewers, and consultants Thoroughly reviewed by an Advisory Board of 14 distinguished scholars that are masters in their chosen field