Loomis, Mary E. S. <br/><br/>
Data communications 
Mary E.S. Loomis 
 - Englewood Cliffs, N.J.  Prentice-Hall  1983 
 - 212p. ill. 24cm 
<br/><br/>Includes index 
<br/><br/><label>LCCN: </label>82-20417 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems