Williams, Robert S. <br/><br/>
Principles of metallography 

 - New York  McGraw-hill Book Company  1920 
 - 158 p.  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>METALOGRAFIA
<br/><br/><label>Universal Decimal Class. No.: </label>A/669.95/W58