Sardana, J. L. <br/><br/>
Universal decimal classification :  structure and methodology / 
 Structure and methodology. 
J. L. Sardana, R. L. Sehgal.  
 - New Delhi :  Ess Ess publications,  1983 
 - vi, 208 p. :  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Universal decimal.