Couch, Leon W. <br/><br/>
Digital and analog communication systems / 
Leon W. Couch II. 
 - 7th ed. 
 - Upper Saddle River, N.J. :  Pearson/Prentice Hall,  c2007. 
 - xxvii, 752 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>9788120334113 
<br/><br/><label>LCCN: </label>2006048552 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication systems.<br/>Digital communications.
<br/><br/><label>Dewey Class. No.: </label>621.380413  / COD