The World Book Encyclopedia (22 Volume Set),World Book Encyclopedia 2018, 22 Volume Set: World Book, Paul Kobasa: 9780716601180: Amazon.com: Books,WORLD BOOK ENCYCLOPEDIA 2007 - Complete 22 Volume HARDCOVER SET,World Book Encyclopedia 2018, 22 Volume Set: World Book, Paul Kobasa: 9780716601180: Amazon.com: Books,World Book Encyclopedia: Vol. 22, Research guide, Index (Ex-Library) (2016) – Eborn Books