Encyclopaedia Britannica,  . <br/><br/>
Britannica Book of the Year 1988 /  

 - 1st ed /  
 - Chicago :   Encyclopaedia Britannica, Inc.. 
 - p.910 :  
<br/><br/><label>ISBN: </label>0-85229-486-7 
<br/><br/><label>Dewey Class. No.: </label>K56,N88  / M8