Roddy Dennis <br/><br/>
Electronic communications 

 - Ed 4 
 - Delhi  Pearson Education (Singapore)Pvt. Ltd.        1995 
 - ix, 820p 
<br/><br/> (Reprinted  2004) 
<br/><br/><label>ISBN: </label>8129701065 (pbk) 
<br/><br/><label>Standard No.: </label>11044 
<br/><br/><label>Source: </label> N R,  Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Communication<br/>Electronic
<br/><br/><label>Dewey Class. No.: </label>D65,4, M7;N5;5   TC