Refractory Hard Metals :  Borides, Carbides, Nitrides, and Silicides / 
P. Schwarzkopf et al. 
 - New York :  The MacMillan Company,  1953. 
 - 447 p. :  fig., tables. 
<br/><br/>Includes Indexes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hard Metals