Communication technology update and fundamentals  / 
editors, August E. Grant, Jennifer H. Meadows. 
 - 13th ed. 
 - Waltham, MA :  Focal,  c2012. 
 - viii, 319 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780240824567 0240824563 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication.<br/>Telecommunication--Technological innovations.
<br/><br/><label>Dewey Class. No.: </label>621.382