Bates (Bud) Regis J. <br/><br/>
Voice and Data Communications Handbook 

 - 3rd ed. 
 - New York :  McGraw-Hill,  c2000. 
 - xxiv, 998 p.:  [D23] 
<br/><br/><label>ISBN: </label>0072122765 
<br/><br/><label>Dewey Class. No.: </label>621.382  / BAT/GRE/VOI