Stein, David H. <br/><br/>
Introduction to digital data communications /  [Book]. 
David H. Stein.  
 - Albany, N.Y. :   Delmar Publishers,   1985. 
 - xi, 252 p. :   ill. ;   24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0827324367 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Digital communications.