Universal decimal classification / 
BSI. 
 - Pocket edtion. 
 - London :  British Standards Institution,  1999. 
 - 288 p. ;  18 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>0580330451 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UDC classification scheme.