Universal decimal classification  auxiliary signs and subdivision 

 - 2nd ed. 
 - Park Street  British Standards Institution  1974 
<br/><br/><label>ISBN: </label>058008373X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification systems<br/>Library science<br/>Universal decimal classification
<br/><br/><label>Dewey Class. No.: </label>025.432  / UNI