Shelly, Gary B.    <br/><br/>
Business data communications :   introductory concepts and techniques /  
Gary B. Shelly, Thomas J. Cashman [and] Judy A. Serwatka    
 - 4th.Ed.    
 - Australia :  Course Technology,   2004.    
 - xv; 15.17p. :  ill.;   28cm.    
<br/><br/>Includes index    
<br/><br/><label>ISBN: </label>0789568063    
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business enterprises--Communication systems   <br/>Business enterprises--Computer networks   <br/>Data transmission systems