World Book This link opens in a new windowCollection of World Book Encyclopedias with portals to the following encyclopedias: Early Learning (Grades PreK+), Kids, (Grades K+), Student (Grades 5+), Advanced (Grades 9+), Timelines (Grades 5+), Enciclopedia Estudiantil Hallazgos (Grades 5+; Spanish), Banco de Contenidos aulaPlaneta (Grades 5+; Spanish), and L’Encyclopedie Decouverte (Grades K+; French).