Stallings, William <br/><br/>
Business data communications / William Stallings, Richard Van Slyke. 

 - 2nd ed. 
 - Prentice Hall 
<br/><br/><label>ISBN: </label>0133484831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data trasmission systems         Computer networks
<br/><br/><label>Dewey Class. No.: </label>004.6 STA