Tandem, John, Turpin. Sarch, Ray. <br/><br/>
Data Communications  Beyond the Basics 

 - New York  McGraw Hill Information Systems Company   1986 
 - 305 
<br/><br/><label>ISBN: </label>0076069508 
<br/><br/><label>Dewey Class. No.: </label>621.384 T957