Communication technology update  

 - Boston :  Focal press,  2000. 
 - viii,349p.;  28cm 
<br/><br/><label>ISBN: </label>0-240-80407-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data Processing<br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>004.6  / COM