Forouzan Behrouz A <br/><br/>
Business Data Communications 

 -  Tata McGraw-Hill Publishing  2003 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0072397020 
<br/><br/><label>Dewey Class. No.: </label>4.6  / FOR/FEG