HALSALL F. <br/><br/>
DATA COMMUNICATIONS, COMPUTER NETWORKS AND OPEN SYSTEMS 

 - 4th ed. 
 -  India : Pearson Education   1996 
 - 907 p. 
<br/><br/><label>ISBN: </label>0008178080982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data Communication: Computer Networks
<br/><br/><label>Dewey Class. No.: </label>004.6  / H14