Stallings, william.  <br/><br/>
Data and computer communications / William Stallings.- 3rd ed..  

 - 3rd. ed. 
<br/><br/><label>ISBN: </label>0029464781 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.
<br/><br/><label>Dewey Class. No.: </label>004.6 STA