Fitzgerald, Jerry. <br/><br/>
Business communications and networking :  basic concepts, security, and design / 
Jerry Fitzgerald. 
 - 6th ed. 
 - New York :  John Wiley & Sons,  c2000. 
 - xx, 491 p. 
<br/><br/><label>ISBN: </label>9971512920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks.<br/>Data transmission systems.<br/>Office practice--Automation.
<br/><br/><label>LC Class. No.: </label>TK5105  / .F577