Friend, George, E.  Fike, John, L. Baker, Charles, H. Bellamy, John, C.  <br/><br/>
Understanding Data Communications 

 - Indiana  Sams Publishing  1988 
 - 23X18 
<br/><br/><label>ISBN: </label>0672272709 
<br/><br/><label>Dewey Class. No.: </label>621.38415 F889