Advanced communication systems 

 - London:   Newnes-Butterworths,   1974 
 - 276p. 
<br/><br/><label>ISBN: </label>0408001240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication
<br/><br/><label>Universal Decimal Class. No.: </label>D 621.391   / L4