Sehgal, R.L. <br/><br/>
Classification  Theory and practice 

 - New Delhi  Ess Ess Pub.  1994 
 - 219p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Classification-Books
<br/><br/><label>Dewey Class. No.: </label>025.4  / S27C