Universal Decimal Classification :  UDC 621.9: working, machining with chip formation, cutting, grending, sheet working etc 

 - 4. ed 
 - 24 p. 
 - FID publication ; n.179)British Standards; 1000621.9): 1976 .
<br/><br/><label>ISBN: </label>0-580-09434-0 
<br/><br/><label>Subjects--Corporate Names: </label><br/>International Federation for Information and Documentation
<br/><br/><label>Subjects--Topical Terms: </label><br/>maquinaria
<br/><br/><label>Universal Decimal Class. No.: </label>025.45CDU  / F449u