Ryerson Steel :  aluminium & steel in stock. 

 - Chicago :  Joseph T. Ryerson & Son,  1960. 
 - 256 p. :  il. ;  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aceros
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>669.14