Deasington, R. J. <br/><br/>
A practical guide to computer communications and networking / 
R.J. Deasington. 
 - Chichester :  Ellis Horwood,  1982. 
 - 132 p. :  ill. ;  24 cm. 
 - Computers and their applications ;  22 .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.<br/>Computer networks.