Kehl, George Louis. <br/><br/>
The principles of metallographic laboratory practice / 
by George L. Kehl. 
 - Second edition, sixth impression. 
 - New York ;  London :  McGraw-Hill Book Company Inc.,  1943. 
 - XIII, [1], 453 strony :  ilustracje ;  22 cm. 
 - Metallurgy and Metallurgical Engineering Series .
 - Metallurgy and Metallurgical Engineering Series .
<br/><br/>Bibliografia przy rozdziałach. Indeks.