A collection of electronic reference books covering many subject areas. Download chapters to your eReader or computer.
A Spanish-language encyclopedia intended for young readers and beginning students of Spanish.
Designed for students reading below grade-level, adult students developing their reading skills or students learning English. Features basic, accessible encyclopedia articles on a variety of topics.
A general encyclopedia containing all articles of the 22-volume print set, as well as pictures, maps, videos and research resources for students.
Contains World Book Online Reference Center's general encyclopedia, as well as a collection of Primary Sources, Pathfinders, Timelines and more.