FitzGerald, Jerry <br/><br/>
Business data communications :  basic concepts, security and design / 
Jerry FitzGerald 
 - 3rd ed. 
 - New York :  John Wiley & Sons,  1990 
 - 628 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0471508772 
<br/><br/><label>LCCN: </label>89-037011 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Computer networks<br/>Office practice<br/>Automation