The World book encyclopedia. 

 - Chicago :  World Book Inc.,  c1990. 
 - 22 v. :  ill. (some col.), col. maps ;  26 cm. 
<br/><br/> Vol. 22 consists of research guide and index 
<br/><br/> Summary: An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students. 
<br/><br/><label>ISBN: </label>0716600900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.