Universal Decimal Classification 

 - London  British Standards Institution        1958 
 - 515p.  cm. 
<br/><br/><label>Standard No.: </label>60561 
<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, J8