British Standards Institution <br/><br/>
Guide to the Universal Decimal Classification (UDC) 

 - London  British Standards Institution  1963 
 - 128p 
<br/><br/>British Standards Institution: Guide to the Universal Decimal Classification (UDC).  London.  British Standards Institution, 1963.--(025.45BRI)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>25.45  / UDC