Data and computer communications 
Stallings, William 
 - New delhi  Prentice Hall India  2004 
 - xv, 847p  ills, tables, index, Acronyms  23.5cm 
<br/><br/><label>ISBN: </label>8120323556 
<br/><br/><label>Dewey Class. No.: </label>004.6 STA  / 0002224