Universal decimal classification =  Classification d ecimale universelle = Dezimalklassifikation. 

 - International medium ed. English text. 
 - London :  British Standards Institution,  1988. 
 - 617 p. 
 - FID publication ;  no. 571 BS ;  1000M : Part 2 : 1988 .
 - FID publication ;  571. B.S. (Series)  1000M. .
<br/><br/> "UDC 025.45 (0.046.4)=20."  Rev. ed. of: Universal decimal classification / British Standards Institution. 1977. 
<br/><br/>pt. 2. Alphabetical subject index. 
<br/><br/><label>ISBN: </label>058017042X (v.2) 
<br/><br/><label>LCCN: </label>90053119 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Universal decimal.