Universal decimal classification 

 - 3rd ed. 
 - London:   British Standards Institution,   1961 
 - 254p. 
 - B. S. 1000A : 1961 (F.I.D no. 289) .
<br/><br/> Abridged english edition 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UDC
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.45  / K1;6