Halsall, Fred <br/><br/>
Data communications, computer networks and open systems 
/by Fred Halsal 
 - 4th ed. 
 - Delhi  Pearson Education  2003 
 - xvi, 907 p. 
<br/><br/><label>ISBN: </label>8178080982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer communication<br/> Data communications<br/>Computer Networks
<br/><br/><label>Dewey Class. No.: </label>005.71  / HAL