World book encyclopedia 

 - London  World Book  1992 
 - 22V 
<br/><br/><label>ISBN: </label> RS 18365.00, (Set of 21 vol.) 
<br/><br/><label>Source: </label> RS 18365.00, (Set of 21 vol.) 
<br/><br/><label>Dewey Class. No.: </label>030 WOR