Sharma, Ajay; Sinha, R.K. Dr. <br/><br/>
Modern electronic communication :  (theory and practice). 

 - New Delhi :  Dhanpat Rai Publishing,  2003. 
 - 623pages. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8187433035 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic communication.<br/>Telecommunication.<br/>Telecommunication.