Telecommunications 

 - 2nd ed. 
 - Delhi:   CBS Publishers & Distributors,             1985 
 - 803p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Physics 
<br/><br/><label>Universal Decimal Class. No.: </label>621.39  / M5