The story timken alloy steel quality. 

 - Ohio :  The thinken Roller Bearing Company,  1953. 
<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