The World book Year Book 1991 

 - Chicago:  Pub.World Book, Inc.  0 
 - 576 p. 
<br/><br/><label>ISBN: </label>716604914 
<br/><br/><label>Subjects--Index Terms: </label>The World book Year Book 1991: The Annual Supplement to The World Book Encyclopedia. 
<br/><br/><label>Dewey Class. No.: </label>O3O  / W66