World Book Discovery Encyclopedia: Volume 12 V-W-X-Y-Z 

 - Chicago  World Book Inc  2009 
 - 176 pages  Color illustrations  28 cm 
 - World Book  9780716674153 .
<br/><br/><label>ISBN: </label>9780716674153 
<br/><br/><label>Dewey Class. No.: </label>J R 031 WORL