Sehgal, R. L. <br/><br/>
An introduction to Universal Decimal Classification 
/by R.L. Sehgal 
 - 1st 
 - New Delhi  Ess Ess Publications  1994 
 - 266p. 
<br/><br/><label>ISBN: </label>8170001668 
<br/><br/><label>Dewey Class. No.: </label>025.4  / SEH/A