William stallings <br/><br/>
Data and computer communication,8th/Ed  English 
william stallings 
 - 8th 
 - New Delhi  Pearson  Education  2007 
 - xvi, 838 p. 
<br/><br/> DOS BS Textbooks 
<br/><br/>Gifted Books 
<br/><br/><label>ISBN: </label>8131715361 
<br/><br/><label>Dewey Class. No.: </label>004.6 STA