Benton, William. <br/><br/>
Britannica Yearbook of Science and the Future /  

 - First Ed. /  
 - Chicago :   Encyclopaedia Britannica, Inc.. 
 - p.800 :  
<br/><br/><label>ISBN: </label>0-85229-168-X 
<br/><br/><label>Dewey Class. No.: </label>n56,L68  / L2