Nussbaumer, Henri <br/><br/>
Computer communication systems - vol. 1  data circuits, error detection data links 

 - New York  John Wiley  1990 
 - x, 271p. ;  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>471923796 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication -- Teleprocessing systems -- Computer networks