Martin, James, <br/><br/>
Principles of data communication / 
James Martin with Joe Leben. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1988. 
 - xxiii, 346 p. :  ill :  25 cm. 
<br/><br/> "A James Martin book"--p. i.  Includes index. 
<br/><br/><label>ISBN: </label>013709891X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.
<br/><br/><label>Dewey Class. No.: </label>004.6 M3642 Pr