Hardy, James K. <br/><br/>
Electronic communications technology / 
James K. Hardy 
 - Englewood Cliffs, NJ:  Prentice Hall,  1986 
 - ix, 420 p.:  ill.;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0132504324 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunications systems<br/>Data transmission systems<br/>Electronic systems