Stallings, William  <br/><br/>
Data and computer communications 
William Stallings 
 - 7th ed.  
 - Delhi  Pearson Education  2004 
 - xvi, 847p. 
<br/><br/><label>ISBN: </label>9788129702067 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks<br/>Data transmission systems
<br/><br/><label>Dewey Class. No.: </label>004.6 St18d7