The New Book of KnowledgeBook - 1984-
A twenty-one volume illustrated edition providing entries suitable for varied reading levels, with each volume containing an index cross-referenced to the contents of the entire set. Includes a comprehensive bibliography graded by reading level.
Publisher: Danbury, Conn. : Grollier, c1984-
Characteristics: 21 v. : ill. (some col.) ; 27 cm.