Advanced communication systems / 
editor: B.J. Halliwell. 
 - London :  Newnes-Butterworths,  1974. 
 - 276 p. :  ill. 
<br/><br/><label>ISBN: </label>0408001240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.