Quinn, Jack. <br/><br/>
Digital data communications   
by Jack Quinn 
 - New Jersy  Prentice-Hall Career & Technology  1995 
 - xv, 319p. 
<br/><br/><label>ISBN: </label>0023972408 
<br/><br/><label>Dewey Class. No.: </label>004.6  / N951