Bhatnagar, Piyush. <br/><br/>
Written communication 

 - New Delhi  Rajat Publications  2008 
 - vi,290p. 
<br/><br/><label>ISBN: </label> RS 750.00 
<br/><br/><label>Source: </label> RS 750.00 
<br/><br/><label>Dewey Class. No.: </label>302.2 BHA