Shelly, Gary B. <br/><br/>
Business data communications :  introductory concepts and techniques / 
Gary B. Shelly, Thomas J. Cashman, Judy A. Serwatka 
 - 2nd ed. 
 - Cambridge, Mass. :  Course Technology,  c1998 
 - xvi , ca. 390 p. ;  28 cm. 
 - Shelly Cashman series .
<br/><br/><label>ISBN: </label>0789542870 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business enterprises--Communication systems.<br/>Business enterprises--Computer networks.<br/>Data transmission systems.
<br/><br/><label>Dewey Class. No.: </label>005.71  / SHE