Marshall, G. J. <br/><br/>
Principles of digital communications 

 - London  McGraw-Hill  1980 
 - ix 170p.: ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>070840962 
<br/><br/><label>LC Class. No.: </label>TK 5103.7  / mar1980.