Kehl, George Louis. <br/><br/>
The principles of metallographic laboratory practice /    
George L. Kehl. 
 - 3rd ed. 
 - New York :   McGraw-Hill Book Company,   1949. 
 - xiv, 520  p. :    ill. ;    24 cm. 
 - Metallurgy and metallurgical engineering series.   .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metallography.--------
<br/><br/><label>Dewey Class. No.: </label>669