The 1990 world book year book. :  the annual supplement to the world book encyclopedia. 

 - ed. 
 - Chicago :  World book, Inc.,  c1990. 
 - 608p :  ill. (chiefly colored) 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0716604779 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World book encyclopedia--annual supplement.
<br/><br/><label>LC Class. No.: </label>AY40  / .N5