The new book of knowledge:   volume 1-21/Scholastic Library Publishing 

 - Danbury, Conn. :  Scholastic Library Publishing,   2007. 
 - 21 v. :   ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780717205417 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries
<br/><br/><label>LC Class. No.: </label>AG 5 THE 2007