World Book International  <br/><br/>
World Book Encyclopedia U-V Vol. 20 

 - USA  World Book, Inc.    1996 
 - 430 
<br/><br/><label>ISBN: </label>0716666960   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias 
<br/><br/><label>Dewey Class. No.: </label>031  / WOR