Deasington, R. J. <br/><br/>
A practical guide to computer communications and networking / 
R.J. Deasington. 
 - 2nd ed. 
 - Chichester :  E. Horwood,  1984. 
 - 126 p. :  ill. ;  25 cm. 
 - ELLIS computers and their applications ;  22 .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0853127646 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.<br/>Packet switching (Data transmission)<br/>Digital computer systems<br/>Networks