Universal decimal classification. International. 

 - 4th 
 - London  British Standards house       1970 
 - FID Pub; 179 .
<br/><br/> Contents UDC 655 Graphic industries printing. publishing book trade 
<br/><br/><label>Standard No.: </label>6,442 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:51M96, qL02-;13 (2)