Shrader, Robert L <br/><br/>
Electronic communication 
Robert L. Shrader 
 - 6th ed 
 - New York  Glencoe, Macmillan, McGraw Hill  1993 
 - xiii, 713 p. ; 24cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780071136655 
<br/><br/><label>Dewey Class. No.: </label>621.382 SHR