Godbole, A..C, <br/><br/>
Data Communication and Networks 
Achyut S Godbole 
 - 2nd ed. 
 - New Delhi  Tata Mc Graw Hill  2011 
 - xviii, 540p:    22cm. 
<br/><br/><label>ISBN: </label>9780071077705 
<br/><br/><label>Dewey Class. No.: </label>004.6