Advanced communication systems 
editor : B. J. Halliwell 
 - London  Newnes-Butterworths  1974 
 - 276 p. : ill. ; 24 cm. 
<br/><br/><label>ISBN: </label>0408001240 
<br/><br/><label>LCCN: </label>74-189440 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication