The World Book encyclopedia 

 - Chicago :  World Book Inc.,  c2011. 
 - 22 v. :  ill. (mostly col.), col. maps ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Vol. 1 to 22. 
<br/><br/> "A 22-volume, highly illustrated, A-Z general encyclopedia for all ages, featuring sections on how to use World Book, other research aids, pronunciation key, a student guide to better writing, speaking, and research skills, and comprehensive index"--Provided by publisher. 
<br/><br/><label>ISBN: </label>9780716601111 (set) 
<br/><br/><label>LCCN: </label>2010028358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>030  / WOR 2011