Dodd, Annabel Z. <br/><br/>
The Essential guide to telecommunication  

 - 5th ed . 
 - Pearson  New Delhi  2013 
 - xxvii, 483 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>621.38 Dod