The new book of knowledge:  Volume 19. U-V/ 

 - Danbury, Connecticut:   Scholastic Inc,  2008. 
 - x, 416 p.:  illustration 
<br/><br/><label>ISBN: </label>9780717205424 
<br/><br/><label>Dewey Class. No.: </label>M 030 N42 2008