Richards, D. L. <br/><br/>
Telecommunication by  speech/  
D. L Richards. 
 - London  Butterworth  1973 
 - 589p.  .ill.  ;24cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>040870344X 
<br/><br/><label>Source: </label> 2004-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication
<br/><br/><label>LC Class. No.: </label>TK6161  / .R52 1973