Arick, Martin. <br/><br/>
Data communications :  concepts and systems / 
Martin Arick. 
 - Wellesley, MA. :  QED Information Science,Inc.,  1987. 
 - xvi, 263 p. :  ill. 
<br/><br/><label>ISBN: </label>0894351508 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communications.<br/>Data transmission systems.