McGraw-Hill,  . <br/><br/>
Yearbook of Science and Technology 1972 /  

 - Reprinted 1973 /  
 - New York :   McGraw-Hill Book Company. 
 - p.468 :  
<br/><br/><label>ISBN: </label>07-045340-3 
<br/><br/><label>Dewey Class. No.: </label>AK73,N60  / L3