Universal decimal classification 

 - 3rd ed.  
 - London:   British Standards Institution,   1961 
 - 254p.  
<br/><br/> B. S. 1000A: 1961<br/>(Abridged english edition) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Classification Nature 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.45  / K1-9