SHAY, WILLIAM.  <br/><br/>
UNDERSTANDNG COMMUNICATIONS & NETWORK / 
WILLIAM A.SHAY 
 - NEW YORK :  THOMSON,  2004. 
 - 766 P. ; 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>004.6  / WIL