The World Book encyclopedia. 

 - Chicago :  World Book,  1993. 
 - 22 v. :  ill. (some col.), col. maps ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0716600935 
<br/><br/><label>LCCN: </label>92061262  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>031