Carlson, A. Bruce.  <br/><br/>
Communication Systems :   An introduction to signals and noise in electrical communication 

 - 2a. ed 
 - London :   McGraw-Hill,   1975. 
 - xv , 495 p. : 21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COMUNICACIONES
<br/><br/><label>Universal Decimal Class. No.: </label>621.39