SEHGAL, R.L <br/><br/>
An Introduction to Dewey Decimal Classification 

 -  New delhi : Ess Ess Publicati  ons        2000 
 - ix, 353 p. 
<br/><br/><label>ISBN: </label>81-7000-165-X 
<br/><br/><label>Dewey Class. No.: </label>25.431