Held, Gilbert,   1943- <br/><br/>
Instructors manual to Data communications networking devices: characteristics, operation, applications /  [Book]. 
Gilbert Held.  
 - Chichester :   Wiley,   1986. 
 - x,65p. :   ill. ;   24cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471910473 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.