COUCH, L. W.  <br/><br/>
Digital and Analog communication systems   

 - London,  Macmillan,   1990. 
 - xxix, 766p.: ill.; figure, graph, table.   Index,   24cm. 
<br/><br/><label>ISBN: </label>0-02-325391-6 
<br/><br/><label>Dewey Class. No.: </label>LM 621.380 COU