Watkins cyclopedia of the steel industry. 

 - Pittsburgh :  Steel Publications,  1947. 
 - 375 p. :  il. ;  29 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metalurgia<br/>Acero<br/>Siderurgia
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>669.1