Universal decimal classification:   669 Metallurgy 

 - London:   British Standarts Institution,   1949. 
 - 43 p.:  
 - British Standars 1000 .
 - British Standars 1000 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>METALURGIA<br/>SISTEMA DE CLASIFICACION<br/>LENGUAJE CONTROLADO