The world book encyclopedia 

 - Chicago  : World Book,  1989. 
 - 440p.   ;   26cm. 
 -  ;  Vol 20 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries
<br/><br/><label>LC Class. No.: </label>REF AE5.W55