Kumar, P.S.G. <br/><br/>
Information and communication 

 -  Delhi, B.R. Pub. Corp.  2004 
 - VIII,459 
<br/><br/> 7962 
<br/><br/><label>ISBN: </label> 1200 
<br/><br/><label>Dewey Class. No.: </label>020  / KUM-I