Held, Gilbert,  1943- <br/><br/>
Data communications networking devices :  characteristics, operation, applications / 
Gilbert Held. 
 - [2nd ed. rev.] 
 - Chichester :  Wiley,  c1986. 
 - xi, 372 p. :  ill. 
<br/><br/> Rev. ed. of: Data communication components. c1979. 
<br/><br/><label>ISBN: </label>0471909475 :  $30.42 (U.S.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks.<br/>Data transmission systems.
<br/><br/><label>LC Class. No.: </label>TK5105.5  / .H44 1986 
<br/><br/><label>Dewey Class. No.: </label>004.6�19